title: Merkel cell carcinoma in a kidney transplant patient: Case report and update on management.
abstract: BACKGROUND
  Merkel cell carcinoma (MCC) is a rare, aggressive neuroendocrine tumor. Its incidence is markedly greater in immunocompromised patients. MCC is found almost exclusively on sun-exposed facial sites.
  
  
  METHODS
  We describe a case of a 62-year-old male renal transplant recipient who was diagnosed with MCC with primary atypical localization on the buttock 5 years after transplantation. Despite the conversion from CsA to mTOR inhibitor, surgical operation, and radiotherapy, the patient developed disseminated skin lesions and died due to multiple metastases.
  
  
  CONCLUSIONS
  This case emphasizes the importance of screening for MCC in atypical localizations in transplant organ recipients.
authors.affiliation: Department of Nephrology, Hypertension and Kidney Transplantation, Medical University of Lodz, Poland.
authors.forename: Ilona
authors.initials: I
authors.lastname: Kurnatowska
authors.forename: Anna
authors.initials: A
authors.lastname: Zawiasa
authors.forename: Joanna
authors.initials: J
authors.lastname: Narbutt
authors.forename: Malgorzata
authors.initials: M
authors.lastname: Wagrowska-Danielewicz
authors.forename: Marek
authors.initials: M
authors.lastname: Stempien
authors.forename: Michal
authors.initials: M
authors.lastname: Nowicki
mesh_terms: D015266:Carcinoma, Merkel Cell / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D017809:Fatal Outcome; D006801:Humans; D016867:Immunocompromised Host; D016030:Kidney Transplantation / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D013472:Sunlight