title: Merkel cell carcinoma arising in the ear canal.
abstract: A case of rare tumor, Merkel cell carcinoma, located in the ear canal of a 25-year-old woman is presented. A polypoid tumor mass was extirpated, and tympanoplasty was done at the first operation, whereas at the second operation, all the bones of the ear canal were removed. Epitympanum and cavum were filled with tumor, and the tumor mass was removed in toto. The histopathology and immunohistochemical staining characteristics of tumor confirmed the presence of Merkel cell tumor. Postoperatively, radiation therapy to the tumor bed was completed. There was no clinical or radiographic evidence of recurrence or metastasis of Merkel cell tumor for 3 years.
authors.affiliation: Department of Radiotherapy and Oncology, Clinical Hospital Centre Rijeka, Rijeka, Croatia.
authors.forename: Marija
authors.initials: M
authors.lastname: Petković
authors.forename: Mira
authors.initials: M
authors.lastname: Krstulja
authors.forename: Jelena
authors.initials: J
authors.lastname: Radic
authors.forename: Gordana
authors.initials: G
authors.lastname: Zamolo
authors.forename: Damir
authors.initials: D
authors.lastname: Muhvić
authors.forename: Ingrid
authors.initials: I
authors.lastname: Lovasic
authors.forename: Milodar
authors.initials: M
authors.lastname: Kujundzic
authors.forename: Artur
authors.initials: A
authors.lastname: Franko
mesh_terms: D000328:Adult; D015266:Carcinoma, Merkel Cell / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery; D018572:Disease-Free Survival; D004424:Ear Canal / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D009364:Neoplasm Recurrence, Local; D012878:Skin Neoplasms / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery; D014057:Tomography, X-Ray Computed