Hydatid cyst of the ilium: A case report

Introduction and importance: Hydatid cyst is a common parasitic disease in endemic countries. It frequently occurs in the liver and lungs. Ilium involvement is extremely rare. We report the case of a 47-year-old man presenting with a hydatid cyst of the left ilium. Case presentation: A rural 47-year-old patient, presented with pelvic pain and limping on walking for six months. He had a pericystectomy 10 years prior for a hydatid cyst of the left liver. A pelvic computed tomography scan showed an osteolytic remodeling of the left iliac wing associated with a large multiloculated cystic mass fusing along the left ilium. The patient had partial cystectomy and curettage of the ilium. The postoperative course was uneventful. Clinical discussion: Hydatid cysts of the bone are exceptional but aggressive due to the absence of a pericyst limiting the extension of the lesions. We report a rare case of a patient presenting with a hydatid cyst of the ilium. The prognosis is poor even in patients who undergo extensive surgical treatment. Conclusion: Early and adequate management can improve the prognosis. We highlight the importance of con-servative treatment consisting of partial cystectomy with curettage of the bone to avoid morbidity related to radical surgery.