Complications and risks of stomach cancer

Stomach cancer and its treatment can lead to complications. Knowing them helps patients and families act early and plan care with the treating team.

Complications of the cancer

• Bleeding: vomiting blood or black stools, leading to anemia and sometimes emergency admission.
• Blockage (obstruction): the tumor blocks the stomach outlet or food pipe junction, causing vomiting, trouble swallowing and weight loss.
• Perforation: a hole in the stomach wall, a surgical emergency.
• Spread: to the liver, peritoneum (abdominal lining, causing fluid buildup), lungs, bones and lymph nodes.
• Malnutrition and cachexia: severe weight and muscle loss from poor intake and the cancer itself.
• Blood clots: cancer raises the risk of clots in the legs and lungs.

Complications of treatment

• Surgery: infection, leaks from the new join, and longer-term issues such as dumping syndrome (dizziness, cramps, diarrhea after eating), diarrhea, and vitamin B12, iron and calcium deficiencies.
• Chemotherapy: nausea, low blood counts with infection risk, hair loss, nerve tingling and fatigue.
• Radiation: irritation of nearby organs, fatigue and skin changes.

Emotional and practical impact Anxiety, low mood, financial strain and caregiver stress are common and deserve support. Counseling, support groups and palliative care teams can help.

Ayurvedic view (interpretive) Traditional texts describe progressive weakening in serious abdominal disease. Modern supportive and palliative care addresses these complications directly.

When to seek urgent care Heavy vomiting of blood, black stools, severe abdominal pain, uncontrolled vomiting, chest pain or breathlessness. Call 112.

Remember Bleeding and blockage are the key cancer emergencies; nutritional and emotional care matter throughout.