title: Pathologic quiz case 2. Merkel cell carcinoma, or primary neuroendocrine carcinoma of the skin.
authors.forename: S J
authors.initials: SJ
authors.lastname: Trimas
authors.forename: S P
authors.initials: SP
authors.lastname: Stringer
authors.forename: K K
authors.initials: KK
authors.lastname: Pierson
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015266:Carcinoma, Merkel Cell / Q000473:pathology*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D009380:Neoplasms, Nerve Tissue / Q000473:pathology*; D009490:Neurosecretory Systems / Q000166:cytology; D012878:Skin Neoplasms / Q000473:pathology*