Comprehensive diagnosis, staging and personalised treatment for cancers affecting the gastrointestinal tract, with care planned according to the cancer type, stage, pathology and individual patient needs.
Gastrointestinal cancer refers to cancers that develop in the gastrointestinal tract. The gastrointestinal tract includes the oesophagus, stomach, small intestine, large intestine, rectum and anus.
Gastrointestinal cancers are not one single disease. Different cancers can arise in different parts of the digestive tract, and their symptoms, pathology, staging systems and treatment approaches can differ. Treatment therefore needs to be based on the specific cancer rather than using the same approach for every patient.
Cancer arising in the oesophagus. Difficulty or painful swallowing, weight loss, chest discomfort and persistent reflux-like symptoms may require medical evaluation.
Also called gastric cancer, this develops in the tissues lining the stomach. Symptoms can be subtle, particularly in earlier disease.
Cancers of the small intestine are uncommon and include several different tumour types, each requiring individual assessment.
Cancer affecting the colon or rectum. Changes in bowel habits, blood in the stool, abdominal symptoms or unexplained weight loss may require investigation.
GISTs are uncommon tumours that arise in the gastrointestinal tract and have distinct pathological and molecular characteristics.
Pancreatic and liver cancers are also cancers of the broader gastrointestinal or digestive system, but they arise outside the gastrointestinal tract itself and are considered separately.
Treatment depends on the exact cancer and how far it has spread. Different gastrointestinal cancers can require very different treatment strategies.
Treatment differs between oesophageal, stomach, colorectal, rectal, small-intestine and other gastrointestinal cancers.
The location of the primary tumour, lymph-node involvement and distant spread help determine the treatment strategy.
The tumour's microscopic characteristics can influence diagnosis, prognosis and treatment planning.
For selected cancers, molecular or biomarker testing can help identify treatments that may be appropriate.
Nutrition, other medical conditions, physical health and previous treatments may affect which options are appropriate.
Treatment may aim to cure the cancer, control disease, reduce symptoms or support quality of life, depending on the situation.
Gastrointestinal cancer treatment may involve more than one oncology specialty. At Precision Oncology Clinic, treatment planning can involve surgical oncology, medical oncology and radiation oncology according to the patient's diagnosis and treatment needs.
Assessment of whether surgery is appropriate, the type of surgery required and the role of lymph-node or tumour removal.
Systemic treatment planning including chemotherapy, targeted treatment, immunotherapy and other appropriate therapies.
Radiation treatment planning when radiotherapy has a role in controlling or treating the cancer.
If you have been diagnosed with gastrointestinal cancer or have concerning symptoms or an abnormal test result, a specialist assessment can help clarify the diagnosis, stage and available treatment options.
Book a ConsultationGastrointestinal cancers can cause different symptoms depending on where they develop. Some cancers may cause few or no symptoms in their earlier stages, while other symptoms can become more noticeable as the disease progresses.
Persistent changes in how the bowel works may need evaluation.
Blood in or on the stool can have several causes and should not be ignored, particularly when persistent or unexplained.
Persistent abdominal symptoms can occur with several gastrointestinal conditions.
Difficulty or pain when swallowing can be a symptom of conditions affecting the oesophagus and should be assessed if persistent.
Losing weight without intentionally changing diet or activity can occur with many medical conditions, including some cancers.
Persistent digestive symptoms should be evaluated rather than automatically attributed to acidity or indigestion.
Many gastrointestinal symptoms are caused by conditions other than cancer. However, symptoms that persist, worsen, recur or occur with unexplained weight loss, bleeding or other concerning changes should be discussed with a doctor.
The location and type of cancer influence the symptoms a person may experience. Some patients may have no obvious symptoms initially.
Difficulty or painful swallowing and unexplained weight loss are important symptoms. Chest discomfort, persistent heartburn, indigestion, cough or hoarseness may also occur.
Symptoms may include indigestion, stomach discomfort, bloating after eating, nausea, reduced appetite, stomach pain, vomiting, blood in the stool or unexplained weight loss.
Possible symptoms include a change in bowel habits, blood in or on the stool, abdominal pain or cramps, unexplained weight loss, fatigue or iron-deficiency anaemia.
Rectal bleeding, changes in bowel habits, a feeling of incomplete bowel emptying and persistent abdominal or pelvic symptoms may require assessment.
Symptoms can vary according to tumour type and location and may include abdominal discomfort, changes in bowel function, bleeding, nausea or vomiting.
GIST symptoms can vary depending on the tumour's size and location and may include abdominal discomfort, bleeding, fullness or other digestive symptoms.
Persistent or unexplained symptoms deserve medical assessment. Early evaluation can help determine whether the cause is a benign condition, a precancerous change or cancer.
Cancer does not always cause pain or obvious symptoms in its early stages. If a symptom is persistent or unusual for you, discuss it with a qualified healthcare professional rather than trying to determine the cause yourself.
Evaluation may involve a clinical examination followed by investigations selected according to your symptoms and medical history.
Screening and diagnostic evaluation are not the same. Screening looks for cancer or precancerous changes in people who may not have symptoms, while diagnostic tests investigate symptoms or abnormal findings.
Colorectal cancer can develop from polyps, and screening can detect polyps or cancer before symptoms appear. Screening recommendations depend on age, personal and family history and individual risk.
A specialist consultation can help determine which investigations are appropriate and whether further evaluation is needed.
Book a ConsultationDiagnosis usually involves several pieces of information rather than relying on a single test. The exact investigations depend on the symptoms, suspected cancer, location of the abnormality and the patient's medical history.
Your doctor reviews symptoms, medical and family history, previous investigations and performs an appropriate physical examination.
Blood tests, stool tests or imaging may be requested depending on the symptoms and suspected source of the problem.
When an abnormal area is identified, endoscopy may allow direct examination and tissue sampling for pathological assessment.
If cancer is confirmed, further tests determine the extent of disease and help guide treatment planning.
Not every patient needs every test. Investigations are selected based on the suspected cancer, symptoms, previous results and the information needed to plan treatment.
Endoscopy allows a doctor to examine the lining of parts of the gastrointestinal tract and, when appropriate, obtain tissue samples.
CT imaging can provide detailed views of the chest, abdomen and pelvis and may help assess the primary tumour and possible spread.
MRI provides detailed soft-tissue images and can be particularly useful for selected gastrointestinal cancers and staging situations.
PET-CT combines metabolic imaging with CT and may be used in selected patients when information about possible active disease elsewhere in the body is required.
Blood tests can provide information about general health and may identify findings such as anaemia or abnormalities relevant to treatment planning.
Endoscopic ultrasound can provide detailed information about the layers of the gastrointestinal wall and nearby structures in selected cancers.
Imaging can show an abnormal area, but a biopsy allows tissue to be examined by a pathologist. In many situations, tissue diagnosis is needed to establish the exact type of cancer and to guide treatment. The appropriate method depends on the location and characteristics of the abnormality.
During an endoscopic procedure, small tissue samples may be taken from an abnormal area for microscopic examination.
In selected situations, imaging may be used to guide a needle biopsy of a lesion or an area outside the accessible lining of the gastrointestinal tract.
Tissue removed during surgery can provide additional information about the tumour, lymph nodes, margins and other pathological features.
Depending on the cancer type, pathological assessment may include tumour classification, grade and selected molecular or biomarker testing that can influence treatment decisions.
A pathology report can provide important information about the tumour type and characteristics. For some gastrointestinal cancers, biomarker or molecular testing may also help identify treatments that could be appropriate.
Different gastrointestinal cancers require different diagnostic and staging approaches. The investigations below are examples and are selected according to the individual clinical situation.
Upper endoscopy with biopsy is commonly used to evaluate a suspicious lesion. CT, PET-CT and endoscopic ultrasound may be used for staging in selected patients.
Upper endoscopy with biopsy can identify and sample suspicious stomach lesions. CT and selected additional imaging or procedures may then be used to determine disease extent.
Colonoscopy can examine the colon and rectum and obtain biopsies. Imaging is then used to assess the extent of disease and help determine the stage.
Assessment may include colonoscopy and biopsy together with pelvic MRI or other imaging to evaluate the local tumour and possible spread.
Diagnosis depends on the tumour location and type and may involve imaging, endoscopic evaluation, biopsy and pathological assessment.
CT, MRI, endoscopy and endoscopic ultrasound may be used depending on tumour location. Pathological and molecular assessment can be important in confirming and characterising a GIST.
Staging describes how extensive the cancer is. It helps the oncology team understand the disease and select an appropriate treatment strategy. The exact staging system varies by cancer type.
Where the cancer started, its size and how deeply it has grown into surrounding tissues may be assessed.
Investigations may assess whether nearby lymph nodes contain or may contain cancer cells.
Imaging and other tests may determine whether cancer has spread to distant organs or tissues.
A specialist review can help explain the findings, clarify whether additional tests are needed and determine the next step in diagnosis and treatment planning.
Book a ConsultationTreatment is selected according to the type and location of the cancer, stage, pathology, molecular findings, overall health and treatment goals. More than one treatment may be used as part of the same treatment plan.
Surgery may be used when the cancer can be removed and may also have a role in selected advanced or recurrent situations.
Chemotherapy uses medicines that circulate through the body and may be given before surgery, after surgery or for disease that cannot be treated with surgery alone.
Radiation uses high-energy radiation to damage cancer cells and may be used before or after surgery, with chemotherapy, or to control symptoms in selected situations.
Targeted treatments act on specific molecular features involved in cancer growth. Biomarker testing may help determine whether a targeted treatment is appropriate.
Immunotherapy helps the immune system recognise and attack cancer cells. Its role depends on the cancer type and relevant tumour characteristics.
Clinical trials may provide access to treatments or treatment combinations that are being studied and may be considered when appropriate for an individual patient.
There is no single treatment pathway for all gastrointestinal cancers. The treatment plan is developed around the specific cancer and its clinical and pathological characteristics.
Depending on stage and other factors, treatment may involve surgery, chemotherapy, radiation therapy or chemoradiation. Systemic therapies including targeted treatment or immunotherapy may have a role in selected advanced cancers.
Treatment can include surgery, chemotherapy and, in selected situations, radiation, targeted therapy or immunotherapy. Treatment before or after surgery may be used depending on the disease and treatment plan.
Surgery is an important treatment for localised colon cancer. Chemotherapy may be used in selected situations, while targeted therapy or immunotherapy can have a role in certain advanced cancers based on tumour characteristics.
Treatment may combine chemotherapy, radiation or chemoradiation and surgery. The sequence depends on the stage, tumour location and other clinical factors.
Treatment depends strongly on the tumour type and location. Surgery may be used for resectable disease, while systemic treatment is selected according to the pathology and extent.
Surgery may be used for resectable GIST. For selected patients, molecular findings can guide the use of targeted treatment such as tyrosine kinase inhibitors.
Treatment can be sequenced in different ways. The order depends on the cancer type, stage, surgical options and the intended treatment goal.
Treatment may be given before surgery to shrink or control the tumour and improve the conditions for subsequent treatment.
In selected localised cancers, surgery may be the initial major treatment followed by additional treatment when indicated.
Additional systemic therapy or radiation may be recommended to reduce the risk of recurrence in selected patients.
When cancer has spread or cannot be removed surgically, treatment may focus on controlling disease, prolonging survival and managing symptoms and quality of life.
Two people with the same broad cancer category may receive different treatment plans. Personalisation involves bringing together the diagnosis, stage, pathology, biomarkers, overall health and the goals and priorities of the individual patient.
Supportive care can be provided alongside cancer treatment to help manage symptoms, treatment-related side effects and other needs throughout the treatment journey.
Before starting treatment, patients should understand the purpose of each treatment, how it will be given, expected duration, possible side effects and how treatment response will be assessed.
A specialist consultation can help you understand your diagnosis, treatment choices, sequencing and the role of different oncology specialists in your care.
Book a ConsultationSurgery may be an important part of treatment when gastrointestinal cancer can be removed. The operation depends on the tumour's location, size, stage, relationship to nearby structures and the goal of treatment.
Selected patients may undergo removal of part of the oesophagus. The remaining digestive tract is then reconstructed so that swallowing can continue.
Depending on the tumour's location and extent, surgery may remove part of the stomach or the entire stomach together with appropriate surrounding tissues and lymph nodes.
Surgery for colon cancer commonly involves removing the section of colon containing the tumour together with surrounding tissue and regional lymph nodes.
Rectal surgery is planned according to tumour location, stage, relationship to the anal sphincter and surrounding structures, and the treatment received before surgery.
When a small-intestine tumour is localised and removable, surgery may involve removing the affected bowel segment and reconnecting the remaining bowel when appropriate.
For resectable GIST, the goal is complete removal of the visible tumour while preserving function and avoiding tumour rupture.
The exact position of the tumour can determine which organs or bowel segments need to be removed and reconstructed.
Local invasion, lymph-node involvement or disease affecting nearby structures can change the surgical plan.
Chemotherapy or radiation given before surgery may influence timing, anatomy and the surgical strategy.
Lymph nodes near the tumour may be removed during cancer surgery and examined by a pathologist. The findings can help determine the pathological stage and whether additional treatment may be appropriate.
After part of the gastrointestinal tract is removed, surgeons may reconnect the remaining bowel or digestive tract when this is safe and appropriate. In some situations, a temporary or permanent stoma may be necessary.
An anastomosis connects two healthy sections of the digestive tract after the diseased segment has been removed. Whether this is possible depends on the operation and individual anatomy.
A stoma creates an opening through the abdominal wall for stool to leave the body into a collection bag. Depending on the operation, it may be temporary or permanent.
After surgery, the removed tissue is examined by a pathologist. The final pathology report can provide important information about the tumour and its extent.
Surgical pathology can confirm the final diagnosis and contribute to pathological staging. The oncology team may use this information when deciding whether additional treatment is appropriate after surgery.
Recovery after gastrointestinal surgery varies according to the operation. Nutrition, bowel function, pain control, wound care, activity and follow-up are considered as part of postoperative care. Some patients may require additional oncology treatment after recovery from surgery.
Understanding why surgery is recommended, what operation is planned, whether additional treatment may be needed and what recovery involves can help you prepare for your treatment journey.
Book a ConsultationMedical oncology uses medicines that can treat cancer throughout the body. Depending on the cancer type and stage, systemic treatment may be given before surgery, after surgery, together with radiation, or as the main treatment for advanced disease.
Chemotherapy uses medicines that kill cancer cells or prevent them from dividing. It can be used alone or combined with other treatments.
Targeted therapies act on specific molecular features involved in cancer growth. Biomarker testing can help identify patients who may be appropriate for selected targeted treatments.
Immunotherapy helps the immune system recognise and attack cancer cells. Its use depends on the cancer type, stage and relevant tumour characteristics.
Different systemic medicines may be combined when evidence supports the approach and when it is appropriate for the individual patient.
In selected cancers, treatment may continue after an initial phase to help maintain disease control. The choice depends on the cancer and response to treatment.
Clinical trials may provide access to treatments or combinations being studied. Eligibility depends on the specific trial and the patient's clinical circumstances.
Some gastrointestinal cancers have molecular or biomarker features that can influence treatment selection. Testing is not identical for every cancer, so the appropriate tests depend on the diagnosis and treatment setting.
Mismatch-repair deficiency or microsatellite instability can be clinically relevant in selected colorectal and other cancers, including decisions about immunotherapy.
HER2 testing can be relevant in selected gastric, gastroesophageal-junction and oesophageal cancers when considering HER2-directed treatment.
Depending on the cancer, additional molecular alterations may influence eligibility for specific targeted therapies or clinical trials.
Radiation therapy uses high-energy radiation to damage cancer cells. Its role varies substantially between gastrointestinal cancers and stages. It may be used before surgery, after surgery, together with chemotherapy, or to relieve symptoms in selected situations.
A treatment machine directs radiation towards the area containing the tumour. Treatment planning is designed to deliver radiation while limiting exposure to nearby normal tissues.
Imaging can be incorporated into treatment planning and delivery to help the radiation team accurately target the intended area.
Chemotherapy and radiation may be given together in selected gastrointestinal cancers because the combination can be useful for specific treatment goals.
In selected cancers, radiation with or without chemotherapy may be given before surgery to treat the tumour and surrounding area.
Radiation after surgery may be considered in selected situations depending on the cancer type, pathological findings and previous treatment.
Radiation can sometimes be used to relieve symptoms caused by cancer when the treatment goal is disease control or comfort.
The role of systemic therapy and radiation differs between gastrointestinal cancers. Treatment is selected after reviewing the pathology, stage, biomarkers and overall health.
Treatment may include chemotherapy, chemoradiation, radiation, targeted therapy or immunotherapy depending on the stage, tumour type and treatment setting. Chemoradiation followed by surgery is one approach used in selected potentially resectable cancers.
Systemic treatment may include chemotherapy, targeted therapy or immunotherapy. Radiation has a role in selected situations. Biomarker testing can help determine whether specific targeted or immune treatments may be appropriate.
Chemotherapy, targeted therapy and immunotherapy may be used according to stage and tumour characteristics. Radiation has a more selective role than in rectal cancer.
Chemotherapy and radiation or chemoradiation may be incorporated before surgery in selected patients. The treatment sequence depends on tumour stage, location and other clinical factors.
Systemic treatment depends on the specific tumour type. Radiation may have a role in selected circumstances, particularly when local disease control or symptom management is required.
Targeted treatment with tyrosine kinase inhibitors can be important in selected GISTs, particularly when surgery is not possible or when treatment is required around surgery.
Systemic therapy and radiation may be used at different points in treatment depending on the disease and treatment goal.
Side effects vary according to the treatment and individual patient. Your oncology team can monitor for side effects and provide supportive treatment when required.
Nutrition can be particularly important in gastrointestinal cancers. Difficulty swallowing, changes in digestion, surgery and treatment side effects can affect food intake and nutritional status.
A medical oncology or multidisciplinary consultation can help explain the role of chemotherapy, targeted therapy, immunotherapy and radiation in your specific diagnosis.
Book a ConsultationCancer treatment is usually a process rather than a single procedure. The sequence depends on the diagnosis, stage, pathology, treatment goal and the patient's overall health.
Establish the diagnosis through appropriate clinical assessment, imaging, endoscopy and pathology.
Determine the extent of the disease and identify information needed for treatment planning.
Review surgery, systemic treatment, radiation and other appropriate options.
Deliver the selected treatment while monitoring response, side effects, nutrition and general health.
Continue surveillance, manage ongoing needs and address recurrence concerns or survivorship needs when appropriate.
Gastrointestinal cancer treatment can involve more than one oncology specialty. Surgical, medical and radiation oncologists may contribute at different stages depending on the diagnosis, stage and treatment plan.
Surgical oncology assessment for gastrointestinal cancers, including consideration of tumour removal, lymph-node assessment, reconstruction and the appropriate surgical approach.
Medical oncology assessment for systemic treatment including chemotherapy, targeted therapy, immunotherapy and other appropriate cancer medicines.
Radiation oncology assessment when radiotherapy or chemoradiation forms part of the gastrointestinal cancer treatment plan.
A treatment recommendation is based on the individual cancer rather than simply its name. Important factors may include:
Treatment discussions should explain the purpose of treatment, expected benefits, potential risks and alternatives so that the patient can participate meaningfully in decisions about care.
A second opinion can help you understand your diagnosis and treatment options, particularly when surgery, multimodality treatment or a major treatment decision is being considered.
Bringing your previous reports can help the oncology team understand the complete clinical picture without unnecessarily repeating investigations.
Follow-up is an important part of cancer care. The schedule and investigations depend on the type and stage of cancer, treatment received and individual risk factors.
Follow-up appointments and selected tests may be used to monitor recovery and look for evidence of recurrent or persistent disease.
Some patients may need ongoing support for changes in bowel function, nutrition, digestion or other treatment-related effects.
Follow-up can also address general health, nutrition, physical wellbeing, emotional support and returning to everyday activities.
Bring your reports and previous investigations for a structured review of your diagnosis, stage and available treatment options.
Book a ConsultationAnswers to common questions about gastrointestinal cancer symptoms, diagnosis, staging, treatment and ongoing care.
Gastrointestinal cancer refers to cancers affecting parts of the gastrointestinal tract, including the oesophagus, stomach, small intestine, colon, rectum and anus. Different cancers have different biological features and treatment approaches.
Symptoms vary according to the location and type of cancer. They may include persistent changes in bowel habits, blood in the stool, abdominal discomfort, difficulty swallowing, persistent digestive symptoms, unexplained weight loss or other changes that do not resolve. These symptoms can also occur with non-cancerous conditions, so medical evaluation is important.
No. Digestive symptoms can have many causes that are not cancer. Persistent, unusual or worsening symptoms should be discussed with a doctor so that the appropriate evaluation can be considered.
Diagnosis depends on the suspected cancer and may involve medical history, physical examination, blood tests, endoscopy or colonoscopy, imaging and biopsy. The exact combination of tests depends on the symptoms and suspected location of the tumour.
A biopsy is commonly used to confirm whether abnormal tissue is cancer and to determine its pathological characteristics. The need for biopsy and the method used depend on the suspected cancer and the clinical situation.
Staging describes how extensive the cancer is. It can include information about the primary tumour, nearby lymph nodes and whether the cancer has spread to other parts of the body. Staging helps the oncology team plan treatment.
Depending on the cancer type, staging may involve CT, MRI, PET-CT, endoscopic ultrasound, additional endoscopic procedures or other investigations. The tests selected depend on the location and characteristics of the cancer.
Treatment may include surgery, chemotherapy, radiation therapy, targeted therapy, immunotherapy or combinations of these treatments. The appropriate treatment depends on the cancer type, stage, pathology, relevant biomarkers and the patient's overall health.
Surgery is an important treatment for many gastrointestinal cancers, particularly when the tumour can be removed. Whether surgery is appropriate depends on the cancer type, location, stage, operability and the overall treatment plan.
Yes. For some gastrointestinal cancers, chemotherapy, radiation therapy or combined treatment may be given before surgery. Treatment before surgery can have different purposes depending on the cancer type and stage.
Chemotherapy may be used before surgery, after surgery, together with radiation in selected situations, or as part of treatment for advanced disease. Its role depends on the specific gastrointestinal cancer and its stage.
Radiation therapy has an important role in selected gastrointestinal cancers. It may be used before or after surgery, with chemotherapy in some treatment plans, or to help control symptoms in certain advanced cancers.
Biomarker and molecular tests examine features of tumour cells that may provide information relevant to treatment. Depending on the cancer, testing may include markers such as mismatch repair or microsatellite instability, HER2 and other molecular findings. Testing is selected according to the cancer type and clinical situation.
Targeted therapy and immunotherapy may be appropriate for selected patients. Their use depends on the cancer type, stage and relevant tumour characteristics or biomarkers. They are not appropriate for every gastrointestinal cancer.
Yes. A second oncology opinion can provide another review of the diagnosis, pathology, imaging, stage and proposed treatment plan. It may be particularly useful when a major treatment decision or combination of treatments is being considered.
Follow-up depends on the cancer type, stage and treatment received. It may include scheduled consultations, selected investigations, monitoring for recurrence, management of treatment effects and support for nutrition, bowel function or other ongoing needs.
Bring your pathology reports, scans and previous treatment records for a structured discussion of your diagnosis and available treatment options.
Book a Consultation
Precision Oncology Clinic, the best Cancer Clinic in Bangalore, located in Vijayanagar. Book appointment!
©2024. All Rights Reserved. Precision Oncology Clinic
By HAAPS
Book Appointment