Abstract
RATIONALE
Mammary hamartoma is a rare benign breast tumor, composed of ducts, lobules, fibers, and adipose tissue. We describe a mammary hamartoma in a man; this is the fourth case being reported in the literature.
PATIENT CONCERNS
A 30-year-old man presented with a 1-month history of a painless mass in his right breast.
DIAGNOSIS
Ultrasound imaging and mammography revealed a lesion, approximately 2.0 cm × 2.0 cm in size, in the right breast, which was considered to be either a lipomyoma or an adenoma fibrosum.
INTERVENTIONS
The mass was surgically resected. Pathological examination confirmed the diagnosis of mammary hamartoma.
OUTCOMES
The patient was discharged from the hospital after surgery. There was no sign of reoccurrence during a 1-year follow-up period.
LESSONS
At present, mammary hamartoma is considered to be a benign lesion, usually treated by surgical resection. Some reports have suggested a possible association between a hamartoma and the development of breast malignancy. The pathology and biology of an association between a mammary hamartoma and malignancy have not been defined to date.
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