A 52-year-old male presented with a swelling in the left chest wall since three years which was gradually increasing in size. The patient underwent surgery for excision of the cyst. Histopathological examination revealed a hydatid cyst. There was no local or systemic hydatic cyst was during the two-year follow-up period. In the absence of hepatic and pulmonary involvement, hydatid disease of other organs is extremely rare. In this paper, we report on a patient who had a primary subcutaneous hydatid cyst in the left chest wall.

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