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The Korean Journal of Pathology 1999;33(3): 199-203.
Hamartoma of the Breast A report of two cases.
Sung Suk Paeng, In Ae Park, Woo Kyoung Moon, Dong Young Noh, Eui Keun Ham
1Department of Pathology, Seoul National University College of Medicine, Seoul 110-744, Korea.
2Department of Radiology, Seoul National University College of Medicine, Seoul 110-744, Korea.
3Department of Surgery, Seoul National University College of Medicine, Seoul 110-744, Korea.
Hamartoma of the breast is a rare benign lesion presenting as palpable mass. They are, however, sometimes misdiagnosed by pathologist due to their resemblance to other benign or physiologic conditions of the breast. We report two cases of hamartomas of the breast. The clinical diagnosis was fibroadenoma in both cases. One patient was a 49-year-old woman presented with palpable mass for the duration of 5 months. Mammography showed a well demarcated round mass with homogeneous density which is slightly greater than the surrounding glandular tissue. Grossly it was a 3.5 3.0 2.0 cm sized round firm mass covered by thin fibrous tissue. Microscopically it was a well defined mass composed of variable amount of breast lobules, dilated ducts and adipose tissue surrounded by dense hyalinized connective tissue. The adipose tissue accounted for 30% of the entire lesion. Cellular atypism was not found. The other patient was a 18-year-old woman presented with palpable mass of the duration of 3 years, which was increased in size recently. Mammography demonstratesd a well delimited lobulated mass with lucent halo. Ultrasonography showed a well encapsulated low echoic mass admixed with high echoic areas. Grossly, it was a 4.0 4.0 2.0 cm sized well demarcated oval-shaped firm mass with translucent thin fibrous capsule.. Microscopic findings were similar to the former. The amount of adipose tissue was 20%.
Key Words: Breast; Hamartoma; Mammography