INTRODUCTION Cytokeratins are important part of cytoskeleton. Cytokeratin 19 (CK 19) belongs to type I cytokeratins. Lung cancer is currently most frequently diagnosed neoplasm in males in many developed countries and in Poland. The prognosis in lung cancer remains unfavourable. The aim of this study was to evaluate the prognostic value of cytokeratin 19 expression in non-small cell lung cancer...

Background: Low-grade oncocytic tumour (LOT) is an emerging entity describing a slow growing with morphologic features overlapping between chromophobe renal cell carcinoma (ChRCC) and oncocytoma, staining positive for cytokeratin-7 negative CD117 (c-kit). This has been recently recognised in the WHO classification of tumours 5th edition 2022. Presentation: In this case report, we present 77-yea...

Cytokeratin (pan) and epithelial membrane antigen (EMA) were considered as commonly useful epithelial markers to distinguish cancer from lymphoma, but the expression of cytokeratin (pan) and EMA had also been seen in some lymphomas. Here, we presented an unusual case of anaplastic large cell lymphoma (ALCL) absence of some lymphoid markers (Including CD3, CD20, Pax-5, CD45Ro) and positive for c...

In 11 testes of different developmental stages (from 10-week-old embryos to adult) the cytokeratin and vimentin expression patterns of rete testis and epididymis were investigated immunohistochemically in formaldehyde-fixed paraffin-embedded material. In addition, immunofluorescence microscopy including double immunofluorescence was performed on frozen sections of 3 of these 11 cases. Rete test...