Quiz<br>
WHAT IS YOUR DIAGNOSIS?

Marian Danilewicz; Janusz Strzelczyk; Małgorzata Wagrowska-Danilewicz

doi:10.5114/pjp.2016.65990

eISSN: 2084-9869
ISSN: 1233-9687

Polish Journal of Pathology

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4/2016
vol. 67

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Marian Danilewicz

,

Janusz Strzelczyk

,

Małgorzata Wagrowska-Danilewicz

Pol J Pathol 2016; 67 (4): 421

DOI: https://doi.org/10.5114/pjp.2016.65990

Online publish date: 2017/02/10

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A 66-year-old woman was presented with the perirenal tumor 15 × 10 mm close to the superior pole of the right kidney. Macroscopically a perirenal tumor consisted of considerably fragile tissue fragment measuring 1.5 × 1.0 × 0.6 cm. Histologically, in routine hematoxylin-eosin stained sections the perirenal tumor was composed of polygonal clear cells or cells with eosinophillic cytoplasm with moderate epithelioid appearance (Fig. 1). In the most cells nuclear polymorphism was prominent. Up to 2-3 mitoses per 10 high-power fields were present. Furthermore, the tumor showed abundant vascularity (Fig. 2). The resection was microscopically incomplete.
Immunohistochemically cytokeratin AE1/AE3, cytokeratin 20, cytokeratin 7, CD10 and protein S-100 were negative, whereas we noted positivity of HMB-45 (++) (Fig. 3), alpha smooth actin (+++), vimentin (++), estrogen receptor alpha (++) and focally desmin (+). Nuclear immunoexpression of Ki67 was present in 8% of tumor cells. The small vessels were revealed using CD34 antibody.

Copyright: © 2017 Polish Association of Pathologists and the Polish Branch of the International Academy of Pathology This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) License (http://creativecommons.org/licenses/by-nc-sa/4.0/), allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material, provided the original work is properly cited and states its license.

Quiz WHAT IS YOUR DIAGNOSIS?

Marian Danilewicz , Janusz Strzelczyk , Małgorzata Wagrowska-Danilewicz

Quiz
WHAT IS YOUR DIAGNOSIS?

Marian Danilewicz

,

Janusz Strzelczyk

,

Małgorzata Wagrowska-Danilewicz