Idiopathic osseous hyperplasia of the nasal turbinates in a Welsh terrier

Intranasal proliferative fibro-osseous dysplasia in a domestic longhair cat

Case summary

A 13-year-old female domestic longhair cat was presented for further investigation of chronic sneezing combined with a right-sided nasal discharge. A CT scan of the head revealed a locally invasive, aggressive right nasal mass radiographically consistent with a malignant neoplastic process. Histopathology on rhinoscopically guided biopsies revealed an unusual pathology consistent with fibro-osseous hyperplasia/dysplasia. Surgical treatment via a ventral rhinotomy and curettage was performed, and the diagnosis confirmed by repeat histopathology. The cat’s clinical signs significantly improved postoperatively.

Relevance and novel information

This case report describes an unusual feline nasal pathology. To our knowledge, there are no previous reports of a non-neoplastic, non-inflammatory expansile feline nasal tumour. Also described are the CT and histological appearance of the mass, and the difficulties encountered obtaining the definitive diagnosis. Information regarding the prognosis following surgical removal of proliferative fibro-osseous lesions in cats is poor, especially from the nasal cavity where clean margins may well be impossible to obtain. In this case, surgical resection improved clinical signs and the cat remains well at 15 months post-procedure.

Rhinolithiasis in two miniature dogs

This case report describes two dogs, a Chihuahua and a Pekingese each with rhinolithiasis. Both dogs were presented with chronic nasal obstruction and discharge. Rhinoliths were noted on computed tomography scans in both animals, and removed via endoscopic extraction in one case and laser-assisted endoscopic surgery in the other. The stone from the Chihuahua comprised calcium carbonate. A potential exogenous nidus in the form of plant material was identified in the Pekingese. To the authors' knowledge, this is the first report of rhinolithiasis in veterinary medicine.