title: Metastatic merkel cell tumor to bladder presenting as an encroachment tumor with gross hematuria.
abstract: Merkel cell carcinoma is an uncommon and aggressive tumor of neuroendocrine and epithelial origin. A case of metastatic Merkel cell tumor with hematuria secondary to invasion into the bladder is presented. This is the second reported case of metastatic Merkel cell tumor to the bladder and the first published cystoscopic image of such a lesion.
authors.affiliation: Division of Urology Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA.
authors.forename: W F
authors.initials: WF
authors.lastname: Santis
authors.forename: E J
authors.initials: EJ
authors.lastname: Billings
authors.forename: W C
authors.initials: WC
authors.lastname: DeWolf
mesh_terms: D015266:Carcinoma, Merkel Cell / Q000150:complications / Q000175:diagnosis / Q000556:secondary* / Q000628:therapy; D003131:Combined Modality Therapy; D003558:Cystoscopy; D005260:Female; D006417:Hematuria / Q000209:etiology; D006801:Humans; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D016879:Salvage Therapy; D012878:Skin Neoplasms / Q000473:pathology* / Q000628:therapy; D001749:Urinary Bladder Neoplasms / Q000150:complications / Q000175:diagnosis / Q000556:secondary* / Q000628:therapy