title: Squamous cell carcinoma in a capybara (Hydrochoerus hydrochaeris).
abstract: A 4-year and 2-month-old male capybara (Hydrochoerus hydrochaeris) was diagnosed with squamous cell carcinoma on the buttocks after chronic recurrent dermatosis. The capybara was euthanized, examined by computed tomography and necropsied; the tumor was examined histologically. Computed tomography showed a dense soft tissue mass with indistinct borders at the buttocks. Histological examination of the tumor revealed islands of invasive squamous epithelial tumor cells with a severe desmoplastic reaction. Based on the pathological findings, the mass was diagnosed as a squamous cell carcinoma. This is the first study to report squamous cell carcinoma in a capybara.
authors.affiliation: Laboratory of Veterinary Pathology, Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
authors.forename: Takahisa
authors.initials: T
authors.lastname: Hamano
authors.forename: Fumio
authors.initials: F
authors.lastname: Terasawa
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Tachikawa
authors.forename: Atsuko
authors.initials: A
authors.lastname: Murai
authors.forename: Takashi
authors.initials: T
authors.lastname: Mori
authors.forename: Khaled
authors.initials: K
authors.lastname: El-Dakhly
authors.forename: Hiroki
authors.initials: H
authors.lastname: Sakai
authors.forename: Tokuma
authors.initials: T
authors.lastname: Yanai
mesh_terms: D000818:Animals; D002294:Carcinoma, Squamous Cell / Q000473:pathology / Q000662:veterinary*; D017809:Fatal Outcome; D006651:Histocytochemistry / Q000662:veterinary; D008297:Male; D012376:Rodent Diseases / Q000473:pathology*; D012377:Rodentia; D012983:Soft Tissue Neoplasms / Q000473:pathology / Q000662:veterinary*; D014057:Tomography, X-Ray Computed / Q000662:veterinary