Endometriosis is a relatively common condition usually found in the pelvis.
However, lesions do occur outside the pelvis and, more rarely, in the uppe
r abdomen. In the case reported here, the patient presented with chronic ri
ght shoulder tip pain. The diagnosis of extrapelvic endometriosis is often
not considered in such circumstances. This patient's symptoms were relieved
by surgical excision of the diaphragmatic lesion.