A Challenging surgery for a giant retroperitoneal hydatid cyst A challenging surgery for a giant retroperitoneal hydatid cyst A challenging surgery for a giant retroperitoneal hydatid cyst in a 31 woman and the cyst was displacing the liver anteriorly and the kidney inferiorly and it was completely excised after aspiration and injection of scolicidal agentsحاله نادره لاستئصال كيس كبير جدا علي جدار البطن من الداخل خلف الكبد وضاغط علي الكلي لفتاه 31 سنه وسبب هذا الكيس طفيليات