Nipple Adenoma

医学 病理 活检 局部广泛切除术 间质细胞 腺瘤
作者
Maximillian A. Weigelt,Andrew P. Sciallis,Patrick J. McIntire,Jennifer S. Ko,Steven D. Billings,Shira Ronen
出处
期刊:The American Journal of Surgical Pathology [Ovid Technologies (Wolters Kluwer)]
卷期号:47 (8): 926-932 被引量:3
标识
DOI:10.1097/pas.0000000000002063
摘要

Nipple adenoma (NA) is a rare, benign proliferation of the nipple ducts. It may be clinically mistaken for Paget disease or squamous cell carcinoma; thus, microscopic evaluation is paramount. A large case series of NA has not been undertaken since the 1980s. Therefore, we undertook this study to evaluate the clinicopathologic characteristics of NA, emphasizing differential diagnoses and follow-up data. We retrieved 50 cases from our in-house archives or consultation files between 2003 and 2022. Available slides were reviewed, and clinical data and follow-up information were obtained. Cases must have exhibited a dense ductal proliferation in the breast tissue with proximity to the nipple epidermis. All patients were women; median age was 56 years. In all, 68% of patients were symptomatic; 53% demonstrated a skin growth. Overall, 67% were excised completely, either primarily (33%) or via re-excision after biopsy (33%). Four histologic patterns were noted: adenosis (dense proliferation of small-to-medium ducts); large duct (medium-to-large caliber ducts); papillary-like (frond-like architecture with branching, slit-like lumens); and pseudoinfiltrative (ducts squished and distorted by dense stromal fibrosis). Follow-up in 44 patients (88%) with a median time of 66 months showed no evidence of recurrence. NA demonstrates a wide spectrum of histopathologic variation. Subtyping of this entity is unlikely to be clinically relevant. Differentiation from invasive carcinoma or other histologic mimics (syringocystadenoma papilliferum, syringomatous adenoma) may be difficult. Simple excision is curative, and recurrence is rare. A definitive link to invasive carcinoma has not been established.
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