iarjmcrIARJMCRIARJMCR2709-3220https://doi.org/10.47310/iarjmcr.2021.v02i01.001Fine Needle Aspiration Cytology of Subcutaneous Hydatid Cyst: A Rare Case StudySuwarnaPatilDilipSarateSwaradaKangateHydatidosis is a parasitic infestation caused by larval form of the tapeworm, Echinococcus. Even in countries where the Echinococcus infestation is endemic, primary hydatid cyst in the subcutaneous tissue and skeletal muscles of thigh, with no involvement of any thoracic or abdominal organs is very entity. We report an unusual case of primary hydatid cyst over posterior aspect of left thigh. Thus, emphasising upon considering echinococcal disease as the differential diagnosis of every subcutaneous cystic mass. This case is presented here for its rarity and importance of aspiration cytology as the first line diagnostic procedure.