Endometriosis presenting like a psoas abscess
Bhat, S.N.; Mohanty, S.P.; Kustagi, P.
Saudi Medical Journal 28(6): 952-954
2007
ISSN/ISBN: 0379-5284 PMID: 17530117 Document Number: 608725
Endometriosis is the presence of ectopic endometrial tissue that responds to hormonal stimulation. Although endometriosis occurs most often in the pelvis, several unusual sites have been reported. We present a case of endometriosis mimicking, a psoas abscess. A 39-year-old lady presented with pain around the right hip, of 5 years duration. Computed tomography (CT) scan showed a multi-loculated. mass in the right iliopsoas muscle. On exploration, a hemorrhagic cystic mass was seen pressing on the femoral nerve. The lesion was excised and histological examination of the tissue showed features of endometriosis. The patient was treated by cyclic hormonal suppressive therapy for 3 months. Her pain and the flexion deformity of the hip resolved completely. Retroperitoneal endometriosis presenting with deformity and pain in the hip may mimic a psoas abscess. If the possibility of this diagnosis is entertained, inappropriate treatment may be avoided.