title: Cystic hypersecretory ductal carcinoma of the breast: a rare cause of cystic breast mass.
abstract: We present the case of a surgically confirmed, invasive, cystic hypersecretory ductal carcinoma (CHDC) of the breast in a 43-year-old woman. The initial sonography showed a complex cyst, which required a core biopsy; however, the diagnosis was delayed as the patient refused to undergo the biopsy and the cyst decreased in size, as seen on follow-up sonography. Excision biopsy was performed, and invasive CHDC was diagnosed after regrowth of the cystic lesion. Meticulous sonographic evaluation of a cystic breast mass is always important, and pathology confirmation must be considered if the lesion shows features suspicious for malignancy, as a CHDC could be the cause of a cystic breast mass.
authors.affiliation: Department of Radiology, The Catholic University of Korea, College of Medicine, Uijeongbu St. Mary's Hospital, CPO Box, Kyunggido 480-717, Korea.
authors.forename: Sun Wha
authors.initials: SW
authors.lastname: Song
authors.forename: In Yong
authors.initials: IY
authors.lastname: Whang
authors.forename: Eun Deok
authors.initials: ED
authors.lastname: Chang
mesh_terms: D000328:Adult; D001706:Biopsy; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D018270:Carcinoma, Ductal, Breast / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D003560:Cysts / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D016217:Ultrasonography, Mammary