Written by Dr. Vinay Mamidala, Surgical Oncologist · Medically reviewed by Dr. C. Raghavendra Reddy, Medical Oncologist · Last reviewed May 2026
Stomach cancer rarely begins with dramatic symptoms — it usually starts as the kind of indigestion most people learn to live with. That is why it is one of the most under-diagnosed cancers in India. Knowing what to watch for, and understanding the role of Helicobacter pylori infection and the typical South Indian diet, can lead to diagnosis at a stage when stomach cancer is highly curable.
Stomach cancer occurs when cells in the stomach lining grow uncontrollably and form a tumour. Most stomach cancers begin in the cells of the innermost layer of the stomach (the mucosa) and grow slowly over months and years — which is why early diagnosis through endoscopy makes such a difference to outcomes. The most common type, gastric adenocarcinoma, accounts for over 90% of cases worldwide.
South India — including parts of Telangana, Andhra Pradesh, Karnataka and Tamil Nadu — has historically had higher stomach cancer incidence than the national average. The three biggest drivers are chronic Helicobacter pylori infection, diets that are high in salt, pickles and smoked foods, and persistent tobacco use. Greater awareness of upper-GI symptoms, easier access to endoscopy, and active H. pylori treatment are slowly improving early diagnosis rates.
Stomach cancers are classified by the cell type they arise from. Adenocarcinoma is by far the most common; other types are rare but require very different treatment.
The most common type of stomach cancer. It begins in the cells of the stomach lining and is divided into intestinal-type (better prognosis, more common in higher-risk regions) and diffuse-type (more aggressive). Treatment is primarily surgical (subtotal or total gastrectomy), supported by chemotherapy, targeted therapy for HER2-positive tumours, and immunotherapy.
A rare type of stomach tumour that begins in specialised cells in the stomach wall. GIST is treated very differently from adenocarcinoma, often with targeted therapy (imatinib) combined with surgery.
A rare cancer that develops in the immune cells of the stomach. Many gastric lymphomas (specifically MALT lymphoma) are strongly linked to H. pylori infection, and early-stage cases sometimes regress with antibiotic treatment alone.
A rare, usually slower-growing group of stomach tumours arising from hormone-producing cells. Treatment depends on the size, number and grade of the tumour.
For detailed information on diagnosis, surgical and medical treatment options including gastrectomy and chemotherapy protocols, see our dedicated page on stomach cancer treatment in Hyderabad.
Stomach cancer is one of the most under-diagnosed cancers precisely because its symptoms — persistent indigestion, mild discomfort, occasional vomiting — overlap so much with common, harmless digestive issues. Watch for:
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South India has historically had higher stomach cancer rates than the national average, and Telangana and Andhra Pradesh are part of that pattern. Three regional drivers stand out: very high rates of Helicobacter pylori infection (often acquired in childhood and never treated), traditional diets that are high in salt, pickles, dried fish and smoked foods, and persistent tobacco use — both smoking and chewed forms like gutkha and zarda. Anyone with chronic indigestion, especially over the age of 40, who is not responding to standard antacid treatment should consider an upper endoscopy and H. pylori testing rather than continuing self-medication.
The exact cause of stomach cancer is often a combination of factors building up over years. Established risk factors include:
Persistent upper-GI symptoms in anyone over 40 — especially with weight loss or anaemia — deserve specialist review. See an oncologist or gastroenterologist if you notice:
A short specialist consultation and the right diagnostic test — imaging, endoscopy, biopsy, or blood test as appropriate — is usually enough to confirm or rule out cancer. Early action is always easier than catching up later.
Our NABH-accredited centres across Hyderabad deliver evidence-based stomach cancer care — from upper endoscopy and biopsy through to subtotal and total gastrectomy, D2 lymph node dissection, perioperative and palliative chemotherapy, HER2-targeted therapy, and modern immunotherapy combinations — guided by NCCN and ESMO protocols and reviewed for every patient by a multidisciplinary tumour board.
For a detailed walk-through of stomach cancer diagnosis, treatment options, costs, and our specialist team, see our dedicated page on stomach cancer treatment in Hyderabad.
Disclaimer: This page is intended for general informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified oncologist for guidance specific to your medical condition. Content on this page is periodically reviewed and updated by CION's medical team in accordance with current clinical guidelines.
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Start Your Story. Book Free Consultation.Stomach cancer often has no specific early sign — the first clues are usually persistent indigestion, a feeling of fullness after small meals, mild upper-abdominal discomfort, or slow weight loss. Many people dismiss these symptoms as routine acidity. The key warning is persistence: any digestive symptom that lasts more than 2–3 weeks, especially with weight loss or anaemia, deserves an upper endoscopy.
Yes — stomach cancer is curable when caught early. Stage I disease treated with surgery has 5-year survival rates above 70%, and very early-stage cancers detected on screening endoscopy can sometimes be cured with endoscopic resection alone. Even locally advanced stomach cancer can often be cured with a combination of perioperative chemotherapy and gastrectomy. Advanced disease is treated with chemotherapy, targeted therapy and immunotherapy.
Chronic Helicobacter pylori infection is the single most important known cause of stomach cancer worldwide. Not everyone with H. pylori develops cancer, but long-standing untreated infection causes chronic inflammation that, over years or decades, can progress to gastric cancer or MALT lymphoma. If you have persistent indigestion, a simple breath test or stool antigen test can detect H. pylori, and a short course of antibiotics can eradicate it.
People over 50, men, those with chronic H. pylori infection, smokers and tobacco chewers, heavy drinkers, individuals with a strong family history of stomach cancer, and those with diets heavy in salt, pickles, dried fish or smoked foods are at elevated risk. The traditional South Indian diet, combined with high tobacco prevalence, makes this an important regional public-health concern.
Many cases are preventable. Treating H. pylori infection when detected, eating a diet rich in fresh fruits and vegetables, limiting salt-preserved and smoked foods, stopping tobacco use in all forms, and limiting alcohol all reduce risk. People with a family history of stomach cancer or hereditary cancer syndromes should discuss surveillance endoscopy with a specialist.
