Jarosław Wejman

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Perivascular epithelioid cell tumor (PEComa) is a rare entity originating from mesenchymal tissue, which stains for both melanocytic and smooth muscle markers. We would like to present an unusual case of the PEComa of the mesentery which was unexpected discovery in a female patient with colonic adenocarcinoma. The tumour was revealed on the computer(More)
INTRODUCTION Ulcerative colitis (UC) and Lesniowski-Crohn's disease together constitute a type of intestinal pathology known as Inflammatory Bowel Disease. The etiology of UC still remains unknown, however some epidemiological data suggest the role of bacteria and viruses and also some habitual as well as environmental factors like smoking, diet, drugs,(More)
We report a case of an 80-year-old woman with a very rare subtype of urothelial carcinoma - nested variant of urothelial carcinoma mimicking physiological von Brunn's nests. Optimal treatment of NVUC has not been determined due to the small number of cases, as well as the lack of randomized and follow-up studies. In our case the right retroperitoneal(More)
The presence of oncogenic types of human papilloma virus (HPV) in location of the anus is related to anal carcinoma. However, there is little knowledge about the natural history of such infections in patients outside risk groups, its relation to cervical cancer, the risk of anal cancer development as well as any way to prevent it. There are no standard(More)
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