Sonographic Findings of Breast Hamartoma: Emphasis on Compressibility.
10.3349/ymj.2003.44.5.847
- Author:
Se Young PARK
1
;
Ki Keun OH
;
Eun Kyung KIM
;
Eun Ju SON
;
Woo Hee CHUNG
Author Information
1. Department of Diagnostic Radiology, Yongdong Severance Hospital, Yonsei University College of Medicine, Dogok-dong, Kangnam-gu, Seoul, Korea. kbrrdoh@yumc.yonsei.ac.kr
- Publication Type:Original Article
- Keywords:
Breast sonography;
breast neoplasm-benign;
breast neoplasm-diagnosis
- MeSH:
Adult;
Breast Diseases/pathology/radiography/*ultrasonography;
Female;
Hamartoma/pathology/radiography/*ultrasonography;
Human;
Mammography;
Middle Aged;
*Ultrasonography, Mammary
- From:Yonsei Medical Journal
2003;44(5):847-854
- CountryRepublic of Korea
- Language:English
-
Abstract:
The characteristic features of hamartoma in terms of discrepancies in mammographic and sonographic shapes of the mass were evaluated. We reviewed 16 pathologically proven breast hamartomas, which had undergone preoperative mammography and ultrasonography. All masses were analyzed according to ACR-BIRADS on mammography. On sonography, each mass was analyzed for size, shape, margin, internal echogenicity, and posterior acoustic enhancement. We also analyzed the echogenicity of halo, and compared the characteristic changes in the shape of hamartomas attributable to compression in mammograms and sonograms. The most common sites were at 12 o'clock in the right breast and 2 o'clock in the left. The most common mammographic findings of the hamartomas were a round shape (11/16), a circumscribed margin (13/16), internal fat densities (D4) (16/16) and radiolucent halos (14/16). The most common sonographic findings of the hamartomas were an oval shape (16/16), circumscribed margins (10/16), heterogeneous internal echogenicity (14/16), echogenic (7/16) or echolucent halos (5/16), and posterior enhancements (12/16). The characteristic feature of hamartomas was a change of the mammographic round shape mass into an elongated oval shape mass by sonography (11/11), suggesting the compressibility of hamartomas. Three of the hamartomas contained a pathologically proven internal calcification. The presence of a hamartoma was suggested by a change in a mammographic round mass with a radiolucent halo into an oval heterogeneous mass surrounded by an echogenic or echolucent halo on the sonogram. This characteristic difference between the mammographic and sonographic findings was attributed to the hamartoma compressibility, and was associated with the over-proliferation of fat containing mature normal breast tissue.
