Gastrointestinal Cancer - Types, Symptoms and Treatment

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What are the Alarm symptoms of Digestive Cancers?

Gastrointestinal cancer often develop silently in their early stages without any significant symptoms, While symptoms may vary based on the specific location and type of the cancer within the digestive tract, Any of these symptoms not responding to simple treatment (2–4 weeks) needs urgent evaluation to exclude or diagnose GI cancers. These symptoms are so common, people tend to ignore the symptoms for long periods and present late.

Persistent Abdominal Pain or Discomfort

Unexplained Weight Loss

Changes in Bowel Habits

Blood in Stool or Vomit

Difficulty in Swallowing (Dysphagia)

Loss of Appetite

Jaundice

Anemia

If you notice any of these digestive tract problem symptoms, it’s important to seek early medical evaluation.

Diagnosis

Endoscopy & Colonoscopy

These minimally invasive procedures allow direct visualization of the digestive tract, helping to detect tumors, ulcers, or abnormal tissue in the esophagus, stomach, and colon.

Biopsy

During an endoscopy or colonoscopy, tissue samples may be taken and examined under a microscope to confirm the presence and type of cancer cells.

CT, MRI, and PET-CT Scans

All tumors need accurate staging extent to plan the treatment options.

Advanced imaging techniques provide detailed cross-sectional views of internal organs, helping doctors assess tumor size, location, and possible metastasis.

Tumor Markers & Blood Tests

Certain cancers produce specific markers detectable in blood tests. These assist in diagnosis, monitoring treatment response, and checking for recurrence.

Ultrasound & Endoscopic Ultrasound (EUS)

These techniques are particularly useful for assessing oesophageal gastric and pancreatic tumors and take samples from suspicious lesions and lymph nodes.

Types of Digestive Cancers

Digestive cancers, also referred to as gastrointestinal (GI) cancers, can affect various parts of the digestive system. Common types include:

Stomach (Gastric) Cancer: Begins in the lining of the stomach and often linked to H. pylori infections or dietary factors.
Colorectal Cancer: Affects the colon or rectum and is often detected through routine screenings like colonoscopies.
Esophageal Cancer: Occurs in the tube that carries food from the mouth to the stomach, commonly linked to smoking, alcohol, and GERD.
Pancreatic Cancer: Known for its aggressive nature, it affects the pancreas.
Liver Cancer: Can develop in those with chronic liver diseases like hepatitis or cirrhosis.
Small Intestine Cancer: Rare but potentially serious, often diagnosed late due to vague symptoms.
Gallbladder & Bile Duct Cancers: Often associated with gallstones and chronic inflammation in the biliary system.

Causes

Digestive system disorders that progress into cancer often stem from a mix of genetic, environmental, and lifestyle-related factors. Common causes include:

Genetic Predisposition: A family history of digestive cancers may increase your risk.
Poor Diet & Obesity: High intake of processed foods and low fiber consumption are key risk factors.
Smoking & Alcohol Use: Both contribute significantly to cancers of the esophagus, stomach, liver, and colon.
Chronic Inflammation: Conditions such as IBD or long-term infections like Helicobacter pylori and chronic hepatitis can cause cellular changes that lead to cancer.
Age & Gender: Risk increases with age, and some types have higher prevalence based on gender.
Sedentary Lifestyle: Physical inactivity can lead to obesity and sluggish digestion, raising the risk of colorectal cancer.

Medical Conditions Leading to GI Cancer

Several pre-existing digestive system problems can elevate cancer risk:

Barrett’s Esophagus: A complication of long-standing acid reflux, it significantly increases the risk of esophageal cancer.

Gastritis & H. pylori Infections: Persistent stomach lining inflammation can cause cellular damage leading to stomach cancer.

Chronic Liver Disease or Cirrhosis: Conditions such as hepatitis B or C can progress to liver cancer.

Chronic pancreatitis can lead to pancreatic cancer

Inflammatory Bowel Disease (IBD): Conditions like Crohn’s disease and ulcerative colitis increase colorectal cancer risk due to chronic inflammation.

Colon Polyps: Though benign initially, some polyps can transform into colorectal cancer if left untreated.

Surgical Theraphy

Surgery is a primary mode of treatment for most of the digestive cancers and is often curative when performed early.In advanced cases, therapy surgery is usually combined with chemotherapy and/or radiotherapy. Common surgical interventions include:

Oesophagectomy: (Hybrid / Total / Laproscopic 2 stage / 3 stage) to remove Esophageal cancer with all the draining lymph nodes for oesophageal cancer.

Gastrectomy: (Total Subtotal D2) Surgical removal of part or all of the stomach with all the draining nodes for treating stomach cancer.

Liver Resection: Right (or) Left / or Extended Hepatectomies Removal of a portion of the liver affected by cancer while preserving healthy tissue.

Whipple Procedure (Pancreaticoduodenectomy): A complex surgery for pancreatic cancer that involves removing the head of the pancreas, Gall bladder, CBD and part of the small intestine, and other involved nearby structures including draining lymph nodes.

Colectomy: Hemicolectomy (Right & Left), Anterior Resection (High, Low, Ultralow), and AP Resection Partial or total removal of the colon, usually performed in cases of colorectal cancer.

Laparoscopic Cancer Surgery Minimally invasive surgery that allows for precise removal of tumors through small incisions, aiding in faster recovery and reduced risk. The long term results are as good as or even better than open surgery.

Treatments & Procedures

Treatment plans for digestive system cancers are personalized and often involve a multi-modal approach that may include:

Surgery (Open and Minimally Invasive) Chemotherapy Targeted Therapy Immunotherapy Radiation Therapy Nutritional Support & Palliative Care

Surgery (Open and Minimally Invasive)

Both open and minimally invasive approaches are used for treating GI cancers with equally good short-term and long-term results. Surgery is the main and most important treatment in GI cancers, and chemotherapy and radiotherapy is used either before or after the surgery

Chemotherapy

This adjunct therapy targets rapidly dividing cancer cells and may be used before or after surgery or as a standalone treatment in advanced stages.

Targeted Therapy

Focuses on specific genetic mutations or proteins in cancer cells, offering more precise and often less toxic treatment options.

Immunotherapy

Enhances the body’s own immune system to fight cancer, used in selected cases based on biomarker testing.

Radiation Therapy

This adjunct treatment is aimed at downstaging and downsizing selected cases of Esophageal, Rectal, and Pancreatic tumors, especially in locally advanced cases with no distant spread.

Nutritional Support & Palliative Care

Digestive cancers often impair appetite and nutrient absorption. Nutritionists and palliative care teams work alongside oncologists to maintain strength and comfort during treatment.

Prevention and Awareness

Meet our team of gastroenterologists and oncologists who specialize in digestive cancer

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Gastroenterology team

Dr. S. Paulvannan

MS, DNB, FRCS (Glasg), FRCS (Gen.Surg), CSST, HPB Fellow (Cambridge, UK).,

Consultant Surgical Gastro, Advanced Laparoscopic, HPB and GI Onco & Bariatric Surgeon

Dr. A. Sandip Chandrasekar

MS, M.Ch (SGE), DNB (GI.Surgery), FALS (Bariatric).,

Consultant Surgical Gastro, Advanced Laparoscopic, HPB,GI Oncology and Bariatric Surgeon

Dr. S. Soundappan

MBBS(MMC), MS(KEM, Mum), MRCS(UK), DNB - Surg Gastro (AIG, Hyd), FALS-Robotic, Fellowship-Hepatobiliary Surgery(AIG,Hyd), Fellowship-Liver transplant(CLBS,Delhi).,

Consultant - Gastro, Minimally invasive, and Liver transplantation surgeon

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Frequently Asked Questions

1. What are common digestive system problems that can lead to cancer?

Chronic digestive issues like ulcers, GERD, IBD, and infections can increase cancer risk over time.

2. What is the treatment for stomach cancer?

Depending on the stage, stomach cancer treatment may involve surgery, chemotherapy, and radiation.

3. What causes breathing difficulty in digestive cancers?

Advanced cancers or associated complications like ascites or metastasis may lead to pressure on the lungs.

4. Is snoring, sneezing, or wheezing related to digestive cancers?

Not directly. However, reflux or GERD-related conditions may cause throat irritation and breathing issues in some cases.

5. Is tuberculosis linked to digestive system disorders?

Abdominal TB is a known form of extrapulmonary TB and can mimic digestive tract problems.