DOI: 10.36347/sasjs.2018.v04i09.002

Pages: 170-172

Hydatidosis is a parasitic disease that is endemic in many traditional livestock breeding countries, including Morocco. Orbital location is extremely rare and represents less than 1% of all locations. We report the case of a 14-year-old child who presented for a non-axial, non-reducible inferonasal grade II proptosis with a deep decrease in visual acuity of the right eye without any deterioration of the general state of health, or other neurological deficit. MRI shows a cystic lesion bilobed with calcification seat on the right external muscle of the right orbit. The rest of the radiological assessment, including the abdominal ultrasonography, reveals hydatid cysts, stage I, II, III and IV of GHARBI classification. Hydatid serology is positive. The patient underwent surgical treatment of orbital hydatidosis followed by medical treatment with Albendazole. Bacteriological examination confirmed the diagnosis of orbital hydatid cyst. The postoperative evolution was favourable. Orbital hydatidosis should be a differential diagnosis of cystic orbital lesions especially in endemic countries.