Biphasic papillary renal cell carcinoma is a rare morphological variant with frequent multifocality: a study of 28 cases

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11140%2F18%3A10374433" target="_blank" >RIV/00216208:11140/18:10374433 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1111/his.13432" target="_blank" >https://doi.org/10.1111/his.13432</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/his.13432" target="_blank" >10.1111/his.13432</a>

Result language

angličtina

Original language name

Biphasic papillary renal cell carcinoma is a rare morphological variant with frequent multifocality: a study of 28 cases

Original language description

AimsTo further characterise biphasic squamoid renal cell carcinoma (RCC), a recently proposed variant of papillary RCC. Methods and resultsWe identified 28 tumours from multiple institutions. They typically showed two cell populationslarger cells with eosinophilic cytoplasm and higher-grade nuclei, surrounded by smaller, amphophilic cells with scanty cytoplasm. The dual morphology was variable (median 72.5% of tumour, range 5-100%); emperipolesis was found in all cases. The male/female ratio was 2:1, and the median age was 55 years (range 39-86 years). The median tumour size was 20 mm (range 9-65 mm). Pathological stage pT1a was found in 21 cases, pT1b in three, and pT3a and pT3b in one each (two not available). Multifocality was found in 32%: multifocal biphasic RCC in one case, biphasic + papillary RCC in two cases, biphasic + clear cell RCC in three cases, biphasic + low-grade urothelial carcinoma of the renal pelvis in one case, and biphasic + Birt-Hogg-Dube syndrome in one case. Positive immunostains included: PAX8, cytokeratin (CK) 7, -methylacyl-CoA racemase, epithelial membrane antigen, and vimentin. Cyclin D1 was expressed only in the larger cells. The Ki67 index was higher in the larger cells (median 5% versus 1%). Negative stains included: carbonic anhydrase 9, CD117, GATA-3, WT1, CK5/6, and CK20; CD10 and 34E12 were variably expressed. Gains of chromosomes 7 and 17 were found in two evaluated cases. Follow-up was available for 23 patients (median 24 months, range 1-244 months): 19 were alive without disease, one was alive with recurrence, and one had died of disease (two had died of other causes). ConclusionsBiphasic papillary RCC is a rare variant of papillary RCC, and is often multifocal.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30109 - Pathology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Histopathology

ISSN

0309-0167

e-ISSN

—

Volume of the periodical

72

Issue of the periodical within the volume

5

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

777-785

UT code for WoS article

000427248900007

EID of the result in the Scopus database

2-s2.0-85041026408