A case of breast sparganosis: with an emphasis on ultrasonographic findings.

Sparganosis is a rare disease caused by the infestation of the plerocercoid tapeworm larva of the genus Spirometra. Human sparganosis is most commonly encountered in subcutaneous fat areas of the abdomen, limbs, and genitourinary tract. Breast sparganosis occur very rarely, accounting for less than 2% of total human sparganosis cases. Because of the disease's rarity, clinical suspicion is essential to reach the diagnosis of breast sparganosis. We present a case of mammary sparganosis in a 58 year-old woman on the ultrasonographic findings. The patient had a painless breast lump with a history of drinking impure water. On ultrasonography (US), we noted four masses, the largest lesion was suspected as sparganosis, and others tended to be benign lesions. The patient was treated following excisions by a US guided Vacuum-assisted breast biopsy system (VABB). The final diagnosis of all lesions was sparganosis.