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A micropapillary pattern characterized by lack of fibrous stalks within the papillae is observed in micropapillary DCIS and invasive micropapillary carcinoma. In addition, a variety of other rare breast lesions reveals a papillary architecture such as tall cell carcinoma with reversed polarity (TCCRP) and mucinous cystadenocarcinoma, adenomyoepithelioma, and secretory carcinoma. In addition, benign lesions such as usual ductal hyperplasia, apocrine metaplasia, gynecomastia, and juvenile papillomatosis may show a papillary or micropapillary architecture. Fragments of a benign papilloma in a breast biopsy are considered a lesion of uncertain malignant potential (B3 in the European classification) and excision is mostly recommended. Although the knowledge about molecular pathology of papillary breast lesions has increased, there is not sufficient evidence for diagnostically useful molecular features, yet. The aim of this review is to provide an update on papillary and micropapillary lesions with emphasis on problematic areas for daily diagnostic work including biopsies.<\/jats:p>","DOI":"10.1007\/s00428-021-03182-7","type":"journal-article","created":{"date-parts":[[2021,11,3]],"date-time":"2021-11-03T13:16:42Z","timestamp":1635945402000},"page":"65-84","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":74,"title":["Papillary lesions of the breast"],"prefix":"10.1007","volume":"480","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6498-5943","authenticated-orcid":false,"given":"Janina","family":"Kulka","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lilla","family":"Madaras","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giuseppe","family":"Floris","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sigurd F.","family":"Lax","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,11,3]]},"reference":[{"key":"3182_CR1","doi-asserted-by":"publisher","first-page":"e8586","DOI":"10.7759\/cureus.8586","volume":"12","author":"M Abdulwaasey","year":"2020","unstructured":"Abdulwaasey M, Tariq MU, Minhas K, Kayani N (2020) Invasive breast carcinoma arising in a nipple adenoma after 15 years: report of a rare case and literature review. 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