Laparoscopic Management of Primary Omental Hydatid Cyst mimicking Gastrointestinal Stromal Tumour (GIST): A Case Report

Abstract

Hydatid disease, a parasitic zoonosis caused predominantly by Echinococcus granulosus, typically affects the liver and lungs. Primary omental involvement is rare and can mimic other intra-abdominal masses. We present a case of a woman in her mid-30’s with an incidentally detected intra-abdominal mass. Contrast-enhanced CT (CECT) of the abdomen suggested a well-defined mass arising from the greater omentum, radiologically diagnosed as a gastrointestinal stromal tumour (GIST). She underwent successful laparoscopic excision of the mass. Histopathological examination revealed a hydatid cyst. The postoperative period was uneventful, and the patient was commenced on albendazole therapy. To our knowledge, this is the first such case managed laparoscopically reported from India. Hydatid disease should be considered in the differential diagnosis of cystic intra-abdominal masses, even when imaging is suggestive of GIST. Laparoscopic excision is feasible and safe in experienced hands. This case underscores the importance of preoperative suspicion, especially in endemic regions.