title: Encapsulated Papillary Carcinoma of the Breast.
abstract: Papillary lesions of the breast include a broad spectrum of entities, many of which can be diagnostically challenging for the pathologist. This article focuses on encapsulated papillary carcinoma, a recently proposed term used to describe papillary carcinoma occurring within a cystically dilated duct. Previously considered a variant of papillary ductal carcinoma in situ, the finding that these lesions typically lack myoepithelial cells at their periphery has raised questions about their true nature. This article presents a practical approach to the diagnosis of encapsulated papillary carcinoma with a review of its histologic mimics and clinical significance.
authors.affiliation: Department of Laboratory Medicine, St. Michael's Hospital and University of Toronto, 30 Bond Street, Room 2-089 CCW, Toronto, Ontario M5B 1W8, Canada. Electronic address: mulligana@smh.toronto.on.ca.
authors.forename: Anna Marie
authors.initials: AM
authors.lastname: Mulligan
keywords: Breast; Encapsulated papillary carcinoma; Intracystic papillary carcinoma; Papillary lesions; Papilloma