ÖZET
Merkel hücreli karsinom (MKK), mekanoreseptör Merkel hücrelerinden kaynaklanan nadir bir tümördür. Ultraviyole maruziyeti, immünosupresyon ve Merkel hücreli polyoma virüsü, tümör patogenezinde önemli bir rol oynamaktadır. Tipik olarak başlangıçta yavaş büyüyen, ağrısız soliter bir lezyon olarak ortaya çıkmasına rağmen, MKK’nin seyri nodal invazyon, uzak metastaz ve yüksek nüks oranları nedeniyle agresif olabilir. Geçmişinde romatoid artrit öyküsü bulunan, uzun yıllardır immünosupresif tedavi gören ve nekrotizan granülomatöz lenfadeniti olan bir MKK olgusunu sunuyoruz.
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