ICD-11 definition : Accumulation or retention of free fluid in the abdominal peritoneal cavity between
the tissues lining the abdomen and abdominal organs. The fluid may be serous, hemorrhagic,
or the result of inflammation or tumor metastasis to the peritoneum.;
Accumulation or retention of free fluid in the abdominal peritoneal cavity between
the tissues lining the abdomen and abdominal organs. The fluid may be serous, hemorrhagic,
or the result of inflammation or tumor metastasis to the peritoneum.