title: Breast masses with mixed cystic-solid sonographic appearance.
abstract: Retrospective analysis was performed for 56 breast masses with mixed cystic and solid sonographic patterns encountered in the last 5 years at Keio University Hospital, with the objective of elucidating their significance. The lesions were classified into two major groups: tumor with cyst (TWC--solid mass with cystic component) and intracystic tumor (ICT--cystic mass with solid component). According to the pathological diagnosis, 57% were benign and 43% were malignant. Fifty eight percent of malignant lesions were shown to have a TWC pattern and 42% an ICT pattern. Among benign lesions, 66% were shown to be TWC and 34% ICT. In malignant tumors, 96% of the cases showed irregular shape and heterogeneous internal content. Even in benign lesions, a high incidence of irregular shape and rough border was found, although the predominant internal echo texture was homogeneous, and three-dimensional (3-D) contour was not clear. In conclusion, we observed that in the TWC group, the lack of a defined 3-D contour is the most important criterion, and tumors with multiples cysts tend to be benign.
authors.affiliation: Department of Diagnostic Radiology, Keio University Hospital, Tokyo, Japan.
authors.forename: L M
authors.initials: LM
authors.lastname: Omori
authors.forename: N
authors.initials: N
authors.lastname: Hisa
authors.forename: K
authors.initials: K
authors.lastname: Ohkuma
authors.forename: Y
authors.initials: Y
authors.lastname: Fujikura
authors.forename: K
authors.initials: K
authors.lastname: Hiramatsu
authors.forename: I
authors.initials: I
authors.lastname: Enomoto
authors.forename: T
authors.initials: T
authors.lastname: Ikeda
authors.forename: M
authors.initials: M
authors.lastname: Mukai
mesh_terms: D000328:Adult; D001706:Biopsy; D001940:Breast / Q000473:pathology; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000453:epidemiology / Q000473:pathology; D005260:Female; D005348:Fibrocystic Breast Disease / Q000000981:diagnostic imaging / Q000453:epidemiology; D006801:Humans; D008875:Middle Aged; D012189:Retrospective Studies; D016217:Ultrasonography, Mammary