A DIFFERENTIAL SIGN IN ABDOMINAL RIGIDITY
Abdominal signs and symptoms in diaphragmatic pleurisy have been emphasized times innumerable. Let us add chest injury to the pleurisy. There are few internists who have not placed the lesion in the peritoneal cavity, and few surgeons who have not operated in such cases for appendicitis or other acute abdominal condition—all of which means that the differential diagnosis is often extremely difficult.
It is hoped that the simple sign here described may be of value to some in such cases...