PERENDOSCOPIC TRANS-TYMPANIC EXCISION (PTTE) OF EAR CANAL POLYPS IN CATS: 10 CASE REPORTS
Ear canal polyps (ECP) are the most common cause of chronic otitis in cats. Ventral bulla osteotomy (VBO), owing to the frequent or possible recurrence after simple traction and Zepp procedure respectively, is still considered the treatment of choice. The aim of this study is to evaluate the long term efficacy of PTTE as sole therapy for ECP. From March 1999 to January 2001, 10 cats with histologically confirmed ECP were submitted for PTTE. Polyp’s excision was performed under endoscopical vision (2.7 mm 0° arthroscope connected with a video-monitor) using a “pinching” technique through bioptical forceps of different size. After the major part of the polyp has been removed, the lateral bulla compartment was explored to pull out the residual fragments. Follow-up was based on a second endoscopy at least two months post-op; the final outcome was assessed through clinical examination and standard otoscopy at the institution or by referring veterinarian. The mean follow-up was 14 months (3-24). Two cats exhibited temporary Horner’s syndrome. Eight cats had complete remission while two did require a second PTTE. PTTE is a minimally invasive technique that compares favourably with VBO, therefore representing a valuable treatment modality for ECP with few and negligible complications.