Stomach Cancer (Gastric Cancer)

Personalised treatments designed to fight cancer while minimising side effects.

What is Stomach (Gastric) Cancer?

Stomach cancer, also known as gastric cancer, begins when malignant (cancerous) cells form in the inner lining of the stomach. Over time, these cells can grow into a tumour and spread deeper into the stomach wall and to nearby organs. Most stomach cancers develop from the glandular cells of the stomach lining, and are called adenocarcinomas.

How common is stomach cancer in the Philippines?

Stomach cancer (gastric cancer) is less common than the Philippines’ top cancers (such as breast, lung, colorectal, and liver cancer), but it still contributes to a meaningful number of cancer deaths nationwide. 

According to the IARC Global Cancer Observatory (GLOBOCAN 2022): 

  • The Philippines had an estimated 4,155 new stomach cancer cases in 2022, ranking 12th among all cancers (about 2.2% of all new cancer cases). 
  • There were an estimated 3,434 deaths from stomach cancer in 2022, ranking 10th among cancer deaths (about 3.0% of all cancer deaths). 
  • The estimated age-standardized incidence rate (ASR) is 4.2 per 100,000, and the age-standardized mortality rate is 3.5 per 100,000.  

Because early symptoms can be non-specific, timely medical evaluation is important if symptoms persist or worsen. 

What Are the Signs and Symptoms of Stomach Cancer?

Early stages of stomach cancer may not cause clear symptoms, which makes detection difficult. As the disease progresses, patients may experience:

If these symptoms persist, medical evaluation is important.

Screening and Early Detection

Unlike breast or colorectal cancer, there is currently no national screening programme for stomach cancer in Philippines. However, early detection is possible through gastroscopy (endoscopy), particularly for people at higher risk, such as those with:

  • A family history of gastric cancer
  • Chronic H. pylori infection
  • Stomach polyps or chronic gastritis
  • Diets high in smoked, salted, or pickled foods

For high-risk individuals, regular monitoring and early medical consultation are recommended. Detecting stomach cancer early offers the best chance for successful treatment.

How is Stomach Cancer Diagnosed?

Diagnosis usually involves a combination of:
Gastroscopy (endoscopy)

A thin tube with a camera is inserted through the mouth to view the stomach lining and take biopsies

Tissue samples are examined under a microscope to confirm cancer

CT scans, PET scans, and ultrasounds help assess the extent of the disease

To check overall health and detect tumour markers

Early diagnosis can improve treatment outcomes.

What Are the Causes and Risk Factors?

Several factors increase the risk of developing stomach cancer:

  • Helicobacter pylori (H. pylori) infection – a common bacterial infection linked to stomach ulcers and cancer
  • Dietary factors – high intake of salted, smoked, or pickled foods
  • Smoking and alcohol consumption
  • Family history of gastric cancer
  • Chronic gastritis or stomach polyps
  • Older age and male gender

What Are the Types of Stomach Cancer?

The main type is adenocarcinoma, which makes up more than 90% of cases. Other rarer types include:

Lymphoma of the stomach

Cancer of the immune system cells in the stomach wall

Cancers of the connective tissue

Slow-growing cancers arising from hormone-producing cells

What Are The Stages of Stomach Cancer?

Staging describes how far the cancer has spread:

Stage I

Cancer is limited to the stomach lining or wall

Cancer has grown deeper into the stomach wall and may involve nearby lymph nodes

Cancer has spread to distant organs (such as the liver, lungs, or bones)

What are Stomach Cancer Treatments?

Treatment depends on the stage, type, and overall health of the patient. At OncoCare Philippines, options include:

Surgery

Removal of part or all of the stomach (gastrectomy) for curative intent.

Radiotherapy

High-energy rays to kill cancer cells, sometimes combined with chemotherapy.

Targeted Therapy

Newer treatments that attack cancer cells more precisely, or boost the body’s immune system to fight cancer.

Immunotherapy

Newer treatments that attack cancer cells more precisely, or boost the body’s immune system to fight cancer.
Every patient’s treatment plan is carefully tailored to their needs, with the goal of achieving the best possible outcomes while preserving quality of life.

Meet Our Doctors

At OncoCare Philippines, our multidisciplinary team brings together oncologists specialising in stomach and gastrointestinal cancers, upper GI surgeons skilled in minimally invasive procedures, radiation oncologists, radiologists and pathologists, supported by oncology nurses, dietitians, psycho-oncology counsellors and physiotherapists — working together to deliver comprehensive, personalised care for every patient.

Dr. Angelo Miguel M. Realina
Palliative Care Specialist | Interventional Pain Management Specialist
Dr. Arthur Jason S. Go
Medical Oncologist
Dr. Beverly Ann P. Pineda
Medical Oncologist 
Dr. Carlo Ruperto P. Aguilar
Radiation Oncologist
Dr. Carlos Joseph T. Panaligan Jr.
Consultant Anesthesiologist
Dr. Claudine Yvette S. Gulapa
Anesthesiologist
Dr. Gonzalo C. Banuelos, Jr.
Radiation Oncologist
Dr. Jason King D. Talao
Medical Oncologist 
Dr. Jerickson Abbie S. Flores
Radiation Oncologist
Dr. Joel R. Tayo
Medical Oncologist
Dr. Jose Enrique Y. Montoya
Medical Oncologist
Dr. Karl Jeremy B. Lo
Radiation Oncologist
Dra. Kristine Anne B. Monte
Internal Medicine Specialist
Dr. Marwin M. Manalo
Medical Oncologist
Dr. Misael C. Cruz
Radiation Oncologist
Dr. Noel S. Chua
Medical Oncologist
Dr. Paulo S. Tioleco
Medical Oncologist
Dra. Rosalina P. Tongol
Internal Medicine