Stomach Cancer Symptoms & Diagnosis

Symptoms

There are often no symptoms with stomach cancer, but when they occur, they may include:

Indigestion, heartburn
Abdominal pain or vague abdominal discomfort
Nausea and vomiting
Diarrhea or constipation
Stomach bloating or sense of fullness after eating
Loss of appetite
Weakness, fatigue
Bleeding in vomit or stool
Stool that has turned black or tarry
Unintended weight loss
Fluid swelling in abdomen

These symptoms may also be caused by other, less serious health conditions. A person experiencing these symptoms should see their doctor to determine the cause of the problem.

Diagnosis

Your doctor will ask about your symptoms and medical history, and perform a physical exam.

Diagnostic tests may include:

Blood tests
Fecal occult blood test —This test checks for blood in the stool.
Upper GI series —X-rays are taken after a barium solution is swallowed.
Endoscopy—The stomach is viewed through a thin, lighted tube that is passed through the mouth and into the stomach.
Biopsy —Tissue is removed for testing during endoscopy.
Ultrasound
CT scan

Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition. Copyright © 2025 EBSCO Publishing All rights reserved.