Sonografik Olarak Kuşkulu Olan ve Histopatolojik Olarak Benign Tanı Alan 1 cm’den Küçük Solid Meme Lezyonları: Sonografik Karakterizasyon

Abstract

Aim: The margins of the lesion are known as the most important sonographic feature when evaluating the character of the breast lesion. The aim of our study was to reveal the types and sonographic features of the margins in solid lesions, which were measured 10 mm or smaller, considered suspicious for malignancy in breast ultrasonography, and histopathologically diagnosed as benign; and therefore, to recall the features that will facilitate the evaluation of radiology-pathology compatibility after biopsy. Material and Methods: This study was conducted with 82 women, who were reported as BIRADS 4-5 in the ultrasonography between 2017 and 2020. Lesion size and margins, presence of posterior shadowing and microcalcifications were scanned retrospectively. Lesions were classified according to their margins as smooth-macrolobulated, microlobulated, irregular-indistinct, angular and spiculated. Results: Histopathologically, the most common benign lesions were fibroadenoma (n=26, 31.7%) and fibrocystic changes (n=15, 18.3%). Sonographically, the mean size of the lesions was 8.96±1.46 mm, and the most common margins were irregular-indistinct in 39%, and smooth-macrolobulated in 30%. In the statistical analysis, the incidence of fibroadenoma was found to be significantly higher in the B-IRADS 4a group compared to the patients in the other pathological diagnosis group (p: 0.007). Conclusion: In this study, it was concluded that the indistinct-irregular, microlobulated and angular margins could also be observed significantly in subcentimeter benign breast lesions, and as the size of the lesion got smaller, it became difficult to differentiate the features of the margins; hence they should be evaluated more carefully.