Rare presentation of Hydatid cyst disease at the thigh, a case report from Syria

Abstract

Introduction and importance: Hydatid cyst disease is a zoonoticdisease caused by Echinococcus granulosus and recognized as a significant health issue in many countries, particularly Mediterranean countries. Hydatid cysts in the musculoskeletal system are rare with only few reported cases. These usually occur as secondary cysts resulting from hematogenous dissemination from primary sites. Case presentation: This paper reports a case of a 77-year-old man with a mass in his thigh that had been increasing dramatically in size for four months with no signs of local inflammation, fever or any other symptoms. Findings from MRI were consistent with a large abscess so a true-cut biopsy was taken before referral. Pathological study after surgery revealed the lesion was a hydatid cyst and previously performed biopsy caused rupture of the cyst. Clinical discussion: Misdiagnosing Hydatid cyst especially in non-usual areas, may lead to unwelcomed biopsy and consequences. Conclusion: This case report highlights the importance of considering hydatid cysts when encountering any enlarging mass regardless of its location or rate of growth.