Spontaneous oral tumours in 18 rabbits (2005–2015)

Abstract

This retrospective study of a series of 18 cases aimed to describe the clinical and pathological findings of oral tumours in rabbits, as there have been few reports detailing spontaneous oral tumours in this species. A total of 13 different tumour types were diagnosed: squamous cell carcinoma (three), ameloblastoma (two), fibrosarcoma (two), osteosarcoma (two), cementoma (one), complex odontoma (one), giant cell epulis (one), sarcoma (one), chondrosarcoma (one), trichoepithelioma (one), papilloma (one), malignant melanoma (one) and basal cell carcinoma (one). Odontogenic tumours were relatively common in this study as compared to the oral tumours typically identified in dogs and cats. The most common clinical sign in this study was feeding abnormalities. Surgical excision and radiation therapy were found to be effective in rabbits.

AN OVERVIEW OF RECENT OSTEOSARCOMA CASES IN RABBITS (Oryctolagus cuniculus)

“…Radiography was utilized in almost all cases where diagnostic imaging was performed. In one report, computed tomography was performed (Miwa et al, 2019). In selected cases, a a biopsy or fine needle aspiration was performed (Higgins et al, 2015;van Praag, 2015).…”

Mesenchymal chondrosarcoma in the maxillary gingiva of a Maltese dog: a case report

“…In a previous study, among 109 malignant oral neoplasms in dogs, none were classified as chondrosarcoma [14]. Extraskeletal chondrosarcoma of the gingiva has been reported in rabbits and humans [15]. In rabbit chondrosarcoma, the tumor invaded the nasal cavity and the survival time after diagnosis was 15 days [15].…”

“…Extraskeletal chondrosarcoma of the gingiva has been reported in rabbits and humans [15]. In rabbit chondrosarcoma, the tumor invaded the nasal cavity and the survival time after diagnosis was 15 days [15].…”

Intraocular extraskeletal osteosarcoma in a rabbit (<i>Oryctolagus cuniculus</i>)

“…In dogs and cats, this tumor has been reported in various tissues such as skin and mammary gland [14]. In rabbits, occurrences of extraskeletal osteosarcoma have been reported in the lip, oral cavity and skin [11,12,16].…”

“…In dogs and cats, this tumor has been reported in various tissues such as skin and mammary gland [ 14 ]. In rabbits, occurrences of extraskeletal osteosarcoma have been reported in the lip, oral cavity and skin [ 11 , 12 , 16 ]. Primary intraocular osteosarcoma has been reported on rare occasions in dogs, cats and an umbrella cockatoo ( Cacatua alba ), but no previous reports have described this pathology in rabbits [ 3 , 5 , 6 , 15 , 18 ].…”