[Pain during peritoneum pinching, a pathognomonic sign of peritoneal disease. Clinical research. Semiological value]

Pain induced by pinching the peritoneum betrays a pathology of that membrane. It is absent when the peritoneum is perfectly healthy. Pain is elicited by a special palpation technique. Clinically and statistically, the presence of this pain is pathognomonic, but it does not inform on the aetiology. In the present study the most frequent causes of positive abdominal peritoneal pinching test were peritoneal tuberculosis, followed by portal hypertension with or without liver cirrhosis.