Slika:Merkel Cell Carcinoma buttock 45-year-old woman.jpg

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Opis

This large tumor presented as a protuberant mass on the buttock of a 45-year-old woman. Microscopically it showed sheets of undifferentiated cells with high nuclear/cytoplasmic ratio, a high mitotic rate, a occasional inconspicuous nucleoli.

Immunostains showed strong dot-like and diffuse cytoplasmic positivity for cytokeratins 20, CAM5.2, and AE1-AE3, as well as granular staining for synaptophysin and chromogranin. There were negative reactions for cytokeratin 7, gross cystic disease fluid protein 15, melan-A, S-100 protein, and thyroid transcription factor 1-alpha.

Even though the histologic features and immunostain profile was characteristic of a primary skin tumor, the presentation is atypical. Usually, Merkel cell carcinoma presents on the sun-exposed areas of elderly individuals. Therefore, the pathologist recommended workup for the possibility of another primary site, including lung, female genital tract, salivary gland, and other cutaneous site.
Datum
Vir Merkel Cell Carcinoma
Avtor Ed Uthman from Houston, TX, USA

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w:sl:Creative Commons
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To sliko je prvotno objavil euthman na strani https://www.flickr.com/photos/78147607@N00/414633167 v Flickru. 13. aprila 2008 jo je pregledal robot FlickreviewR in potrdil, da je bila tam na razpolago pod licenco cc-by-sa-2.0.

13. aprila 2008

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8. marec 2007

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trenutno10:04, 9. april 2008Sličica za različico z datumom 10:04, 9. april 20083.286 × 2.824 (2,72 MB)Jacopo Werther{{Information |Description= This large tumor presented as a protuberant mass on the buttock of a 45-year-old woman. Microscopically it showed sheets of undifferentiated cells with high nuclear/cytoplasmic ratio, a high mitotic rate, a occasional inconspic

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