Yaqoob N, Kayani N, Shamim M S.
Mammary Echinococcosis: two Cases and literature review.
J Pak Med Assoc Jan ;54(5):283-4.

A 30 year old female presented with a history of painless mass in the upper outer quadrant of the breast. It was a slow growing lump and had grown to this size in six months. On examination it was a freely mobile soft mass measuring roughly 6.2 x 4.9cm in size. No regional lymph nodes were palpable. The specimen received for histopathology showed a cystic piece of tissue, pearly white in colour and soft in consistency with attached breast tissue flap. Microscopic examination showed a cyst wall composed of lamellated basophilic chitinous material. No scolices were identified, adjacent breast tissue showed extensive secretory change. It was diagnosed as a case of hydatid cyst of breast.

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