title: Invasive micropapillary carcinoma of the breast: clinical, mammographic, and sonographic findings with histopathologic correlation.
abstract: OBJECTIVE
  The purpose of our study was to investigate the imaging features of invasive micropapillary carcinoma of the breast, which is a recently described, rare variant of infiltrating ductal carcinoma.
  
  
  CONCLUSIONS
  Invasive micropapillary carcinoma of the breast usually manifests as a firm, immobile mass. Findings on mammography are of a spiculated, irregular or round, high density mass with or without associated microcalcifications. On sonography, the common findings are of a homogeneously hypoechoic, irregular or microlobulated mass with posterior acoustic shadowing or normal sound transmission. Axillary lymph nodes are frequently involved. Although these findings are not specific and may be seen with other breast malignancies, invasive micropapillary carcinoma should be included in the differential diagnosis for breast masses with these imaging features. Also, radiologic findings may help in the histopathologic differentiation of cases that are difficult to diagnose, such as metastatic tumors.
authors.affiliation: Department of Radiology, Ege University Hospital, Bornova, 35100, Izmir, Turkey.
authors.forename: Isil
authors.initials: I
authors.lastname: Günhan-Bilgen
authors.forename: Osman
authors.initials: O
authors.lastname: Zekioglu
authors.forename: Esin Emin
authors.initials: EE
authors.lastname: Ustün
authors.forename: Aysenur
authors.initials: A
authors.lastname: Memis
authors.forename: Yildiz
authors.initials: Y
authors.lastname: Erhan
mesh_terms: D000328:Adult; D000368:Aged; D001706:Biopsy; D001943:Breast Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D018270:Carcinoma, Ductal, Breast / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology; D002291:Carcinoma, Papillary / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008327:Mammography; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D016217:Ultrasonography, Mammary