Dynamic MRI of Breast Fibroadenoma: Pathologic Correlation.
10.3348/jkrs.1995.33.3.449
- Author:
Ki Keun OH
;
Eun Kee JEONG
;
Jin Kyeung HAHM
;
Pyong Ho YOON
- Publication Type:Original Article
- MeSH:
Breast Neoplasms;
Breast*;
Fibroadenoma*;
Gadolinium DTPA;
Humans;
Incidence;
Magnetic Resonance Imaging*;
Ultrasonography
- From:Journal of the Korean Radiological Society
1995;33(3):449-456
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To analyze the dynamic MR imaging of breast fibroadenoma according to the histologic type for differentiation from breast carcinoma. MATERIALS AND METHODS: Dynamic MR images of 26 lesions from 22 breasts in 19 patients showing atypical clinical features or film mammogram and ultrasound manifestations were performed. We analyzed the speed and the maximal amount of contrast enhancement and the patterns, such as shape, border, and internal signal intensity, among the histologic types during five minutes after contrast injection. RESULTS: The speed and maximal amount of contrast enhancement of fibroadenoma were in descending order of myxoid, sclerotic, glandular, and calcified types. Among these, the value of maximal amount of contrast enhancement of myxoid and sclerotic type were more than 700 NU, but only myxoid type was enhanced more than 700NU within the first 1 minute after contrast injection, similar to the findings of carcinoma. In general, fibroadenoma showed the tendency of smooth surface(69%), well-defined border(88%) with safety rim, and internal homogeneous signal intensity(65%). However, sclerotic type of fibroadenoma had relatively high incidence of heterogeneous internal signal intensity(78%) after Gd-DTPA injection. CONCLUSION: Dynamic MR imaging of atypical breast fibroadenoma mimicking breast malignancy was very useful in differentiation it from carcinoma and had the benefit of classifying fibroadenoma according to its histologic types.
