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Hydatid Cyst in Soft Tissues Mimicking Malignant Tumors

OBJECTIVE
To evaluate the role of fine needle aspiration cytology in the diagnosis of soft tissue hydatid cysts.


STUDY DESIGN
Five cases of soft tissue hydatid cyst were diagnosed primarily by fine needle aspiration cytology.


RESULTS
In all cases, large fragments of acellular material, finely lamellated, were found. There were no complications related to fine needle aspiration, and histologic studies confirmed the diagnosis of hydatid cyst.


CONCLUSION
When acellular, laminated fragments suggestive of a laminated layer are identified on smears, hydatid cyst should be considered in the differential diagnosis, even in atypical locations and in the absence of hooklets, protoscolices or both.