[Primary pelvic hydatid cyst: a case report].

The purpose of this report is to describe a case of primary pelvic hydatid cyst in a 30-year-old man who presented with abdominal symptoms related to compression of the rectum and urinary tract. This unusual location was initially considered as a tumour process. Proper diagnosis can sometimes be based on ultrasound and computerised tomography. However in some cases such as ours surgical exploration may be necessary for definitive diagnosis.