Never underestimate simple splenic cyst.

Although splenic involvement alone in hydatid disease is very rare, spleen is the third common organ involved in hydatid disease. It is endemic in cattle rearing areas but occurs worldwide. The rarity of splenic hydatid disease poses diagnostic challenge for clinicians. The case is presented as the investigation in the beginning which induced confusion among experienced clinicians but subsequently diagnosis of splenic hydatid cyst with peritoneal dissemination was confirmed by laparoscopy and histopathological examination. Hydatid disease of spleen should be considered in differential in every patient in endemic area with cystic lesion of spleen until proved otherwise as the hydatid cyst can present even as simple cyst without having classic serological and imaging features.