title: The human Bosniak model applied to a cat with renal cystadenoma. A classification to differentiate benign and malignant cystic renal masses via computed tomography and ultrasound.
abstract: A 13-year-old domestic shorthair cat was presented with weight loss and azotemia. Abdominal ultrasound revealed a large cystic space- occupying lesion with multiple septae in the left kidney. A core needle biopsy yielded a renal cystadenoma originating from the epithelial cells. This report describes the clinical, ultrasonographic and computed tomographic features and the growth progression of a renal cystadenoma. We describe the first attempt to apply the human Bosniak classification to a cat with renal cystic neoplasia to differentiate between benign and malignant lesions. Cystadenoma should be a differential diagnosis in cases of renal cystic space-occupying lesions. Other differentials, imaging features to differentiate benign and malignant lesions and the risk of malignant transformation will be discussed.
authors.affiliation: Penelope Baloi, Department of Diagnostic Imaging, Animal Health Trust, Newmarket, United Kingdom, Email: penelope.baloi@aht.org.uk.
authors.forename: P
authors.initials: P
authors.lastname: Baloi
authors.forename: F
authors.initials: F
authors.lastname: Del Chicca
authors.forename: M
authors.initials: M
authors.lastname: Ruetten
authors.forename: B
authors.initials: B
authors.lastname: Gerber
mesh_terms: D000818:Animals; D001706:Biopsy; D002371:Cat Diseases / Q000000981:diagnostic imaging / Q000473:pathology; D002415:Cats; D003537:Cystadenoma / Q000000981:diagnostic imaging / Q000473:pathology / Q000662:veterinary; D003937:Diagnosis, Differential; D007668:Kidney / Q000000981:diagnostic imaging / Q000473:pathology; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000662:veterinary; D008297:Male; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
keywords: Bosniak classification; Renal cystic mass; cat; computed tomography; cystadenoma; ultrasound