Clinical Case Challenge

Oral Mass in a Cat

History and Physical Exam:  An 11-year-old, castrated male domestic shorthair cat presented for evaluation of a rapidly growing mass along his left rostral maxilla. The owners reported that hyperemia of the mucus membranes had been noticed in that region at his annual physical exam by his local veterinarian.  The lesion progressed over the next 5 months and caused loosening of his maxillary canine and incisor teeth.  The cat also had a history of hypertrophic cardiomyopathy and hyperthyroidism.  Physical examination revealed an approximate 3.5 x 3 x 2 cm gingival mass in the left rostral maxilla displacing the lip.  Additional findings included loose teeth, blood-tinged saliva, a moderately enlarged left mandibular lymph node, a palpable thyroid slip and a grade III/VI heart murmur. Continue reading