Management of Aural Hematoma with Penrose Drainage in the Dog and Cat: A Retrospective Study of 53 Cases (1996–2016)
Companion Animal Clinic, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
An auricular hematoma is defined blood collection between the cartilage and the skin of the pinna.
The records of 53 cases of dogs and cats presented in the Companion Animal Clinic of the Aristotle University of Thessaloniki with an aural hematoma treated with Penrose drainage were reviewed.
Data collected include signalment, concurrent disease, treatment, post-surgical complications and long- term outcome.
Common canine breeds represented were 16 mixed breed, 10 GSDs and 3 French bulldogs. Four cats were DSH and one was a Persian. Mean age of the dogs was 7.6 years and of the cats was 5 years. Three cats and 31 dogs were male, while 2 cats and 17 dogs were female. Otitis externa was diagnosed in 23 dogs and 3 cats and skin disease was diagnosed in 11 dogs and 1 cat. All dogs and cats had a Penrose drain placed within the hematoma cavity. Recurrence of hematoma was reported in 7 dogs and 1 cat. Those animals were treated with revision drainage of the hematoma and placement of a new Penrose tube. Pinna deformation was diagnosed in 14 dogs and 2 cats. No signs of hematoma were reported after a follow up time of 3.5 years for dogs and 4.5 years for cats.
Penrose drain placement is an effective technique for the management of aural hematoma in dogs and cats but recurrence may be seen in 15% of the animals. Recurrence is effectively managed with a new Penrose tube placement.