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Res."],"published-print":{"date-parts":[[2020,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Thirty-one cases of low-grade renal cell carcinoma (RCC) with clear cells and tubulopapillary\/papillary architecture were analyzed retrospectively with immunohistochemical and genetic markers to gain more experience with the differential diagnosis of such cases. All samples coexpressed CK7 and CA9; the TFE3 or TFEB reactions were negative; the CD10 and the AMACR stainings were negative in 27 cases and 30 cases, respectively. The FISH assays for papillary RCC, available in 27 cases, and deletion of chromosome 3p, available in 29 cases, gave negative results. The results for 3p deletion,<jats:italic>VHL<\/jats:italic>gene mutation or<jats:italic>VHL<\/jats:italic>gene promoter region hypermethylation testing, along with the diffuse CD10-positivity in 2 cases confirmed 21 cases as clear cell papillary RCC (CCPRCC; CK7+, CA9+; no 3p loss, no<jats:italic>VHL<\/jats:italic>abnormality) and 10 cases as clear cell RCC (CCRCC; CK7+, CA9+; no 3p loss,<jats:italic>VHL<\/jats:italic>abnormality mutation\/hypermethylation present). In CCPRCCs, the representative growth pattern was branching tubulo-acinar, commonly accompanied by cyst formation. The linear nuclear arrangement or cup-shaped staining of CA9 did not necessarily indicate CCPRCC, and the absence of these did not exclude the diagnosis of CCPPRC. One tumor infiltrated the renal sinus; the others exhibited pT1 stage; and metastatic outcome was not recorded. The CCRCC cases were in pT1 stage; 6 exhibited cup-shaped staining of CA9, and 1 displayed lymph node metastasis at the time of surgery. Distant metastatic disease was not observed. In summary, the<jats:italic>VHL<\/jats:italic>abnormalities distinguished the subset of CCRCC with diffuse CK7-positivity and no 3p loss from cases of CCPRCC.<\/jats:p>","DOI":"10.1007\/s12253-019-00757-3","type":"journal-article","created":{"date-parts":[[2019,10,26]],"date-time":"2019-10-26T14:04:32Z","timestamp":1572098672000},"page":"1767-1776","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Renal Cell Carcinoma with Clear Cell Papillary Features: Perspectives of a Differential Diagnosis"],"prefix":"10.1007","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0227-5529","authenticated-orcid":false,"given":"\u00c1ron","family":"Somor\u00e1cz","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Levente","family":"Kuthi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tam\u00e1s","family":"Micsik","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alex","family":"Jenei","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adrienn","family":"Hajdu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brigitta","family":"Vrab\u00e9ly","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Erzs\u00e9bet","family":"R\u00e1s\u00f3","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zolt\u00e1n","family":"S\u00e1pi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zolt\u00e1n","family":"Bajory","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Janina","family":"Kulka","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"B\u00e9la","family":"Iv\u00e1nyi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2019,10,26]]},"reference":[{"key":"757_CR1","doi-asserted-by":"publisher","first-page":"1469","DOI":"10.1097\/PAS.0b013e318299f2d1","volume":"37","author":"JR Srigley","year":"2013","unstructured":"Srigley JR, Delahunt B, Eble JN et al (2013) The International Society of Urological Pathology (ISUP) Vancouver Classification of Renal Neoplasia. 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