Does primary peritoneal cancer cause abdominal swelling?

Primary peritoneal cancer affects the lining of the abdomen. The disease can irritate that lining or be associated with a build-up of fluid, making the abdomen feel full, tight, or visibly enlarged. Some people also notice reduced appetite, abdominal or pelvic discomfort, nausea, or changes in bowel habits. These symptoms can occur with non-cancerous conditions too, so the symptom pattern and an examination matter.

Book a medical review if swelling is persistent, increasing, or accompanied by pain, appetite change, or altered bowel habits. Write down when it began, whether it varies during the day, any change in clothing fit, and associated symptoms. A clinician may examine the abdomen and decide whether blood tests or imaging are appropriate. Bring a list of medicines and previous abdominal or pelvic conditions.

Seek urgent care for severe or rapidly worsening abdominal pain, repeated vomiting, inability to pass stool or gas, fainting, fever with a rigid abdomen, or difficulty breathing from increasing pressure. Prompt assessment is also needed for new swelling with marked weakness or dehydration. These signs can reflect several urgent problems and should not be attributed to cancer without evaluation.

Ask what may be causing the swelling, whether fluid is suspected, which examination or imaging is suitable, and which changes should prompt urgent contact.