title: Two independent cases of spontaneously occurring branchioblastomas in koi carp (Cyprinus carpio).
abstract: This report documents 2 cases of branchioblastomas in koi carp (Cyprinus carpio). Macroscopically, both cases were characterized by well-demarcated, pale red nodular masses located at the left first branchial arch and the right pseudobranch, respectively. Histologically, the neoplasias were composed of blast-like cells that differentiated into cartilage and branchial lamellae embedded in abundant fibrous connective tissue. Based on these findings, a branchioblastoma was diagnosed.
authors.affiliation: Centre for Fish and Wildlife Health, Institute of Animal Pathology, Bern, Switzerland.
authors.forename: R
authors.initials: R
authors.lastname: Knüsel
authors.forename: K
authors.initials: K
authors.lastname: Brandes
authors.forename: S
authors.initials: S
authors.lastname: Lechleiter
authors.forename: H
authors.initials: H
authors.lastname: Schmidt-Posthaus
mesh_terms: D000818:Animals; D002347:Carps; D017809:Fatal Outcome; D005393:Fish Diseases / Q000473:pathology*; D005880:Gills / Q000473:pathology*; D006651:Histocytochemistry / Q000662:veterinary; D008297:Male; D009369:Neoplasms / Q000473:pathology / Q000662:veterinary*