Hydatid Cyst in Leg Calves Simulating a Deep-Vein Thrombosis

Introduction: The localization of hydatid cysts in muscles is rare, even in endemic countries [1, 2]. This disease remains a major cause of morbidity worldwide. We report a case of a rare hydatid cyst in the calves, simulating deep vein thrombosis [DVT], while discussing its clinical and radiological features and its therapeutic management. The diagnosis was initially based on imaging and immunological reactions, and was confirmed by histology. Case Presentation: we report the case of a 36-year-old woman of rural origin, with a history of contact with dogs, referred to the emergency department with suspected thrombophlebitis of the lower limb, 3 days old. Palpation revealed a small, poorly defined mass on the posteromedial aspect of the leg, ultrasound revealed a deep collection in the upper 1/3 of the left leg, with multiple inflammatory lymph nodes in the left inguinal region. MRI revealed a heterogeneous liquid lesion formation. The patient underwent surgery, finding a formation measuring 13×11×3cm, which was completely resected. Conclusion: Soft tissue hydatid cysts are a rare localization of Echinococcus granulosus, and the detection of hydatid cysts when DVT is suspected underlines the continuing public health challenge posed by Echinococcus.