Nasopharyngeal sialocoele with underlying auditory tube neoplasia in a cat

Nasopharyngeal sialocoele with underlying auditory tube neoplasia in a cat

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Case summary An 8-year-old cat was Stress Eaze presented with recent signs related to upper airway obstruction.CT revealed a hypoattenuating mass, with rim enhancement, in the nasopharynx.Paracentesis yielded a viscous fluid, consistent with saliva on cytology.

The sialocoele was aspirated, and surgical excision of the ipsilateral mandibular and sublingual salivary glands was performed.The sialocoele recurred 3 months later, associated with a polypoid structure in the auditory tube region.This was surgically extirpated.

Histology was consistent with a tubulopapillar adenocarcinoma.Relevance and novel information To our knowledge, this is the first case report of a nasopharyngeal sialocoele with confirmed underlying neoplasia in a General Testers cat, and the first description of CT imaging features of a nasopharyngeal sialocoele in a cat.