Spleen-splenectomy-hydatid cyst Hydatid cyst disease is endemic in our country. The splenic involvement comes at the third rank following the liver and the lungs. 15 cases were evaluated, retrospectively, between 2002 and 2013. The gender distribution was 73% Females and 27% males. The mean age is 48 years. The pain was a frequent reason for consultation (40%). Splenomegaly was found in 46,7% of patients. The diagnosis is established by Ultrasound scan and computed tomography scan. The splenic hydatid cyst was solitary in 6 cases. Surgical treatment was performed in all cases. Deroofing was the most common method in 53%of cases, and total splenectomy in 47% of cases. The results were good with no mortality and morbidity consisting of one sub-phrenic abscess that required external drainage.