Spontaneous cecal perforation in a cat diagnosed with ultrasonography.

An 8-year-old cat was presented for an acute history of anorexia, marked abdominal pain, and hyperthermia. Ultrasonography showed a cecal perforation with focal steatitis and adjacent free gas bubbles, consistent with focal peritonitis. Surgery confirmed the imaging findings. An enterectomy was performed with the removal of the cecum and ileocolic valve, and anastomosis between the ileum and colon was performed. Histology revealed transmural enteritis and chronic severe pyogranulomatous peritonitis with intralesional plant fragments.

Nasopharyngeal sialocoele with underlying auditory tube neoplasia in a cat.

Case summary: An 8-year-old cat was 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 cat, and the first description of CT imaging features of a nasopharyngeal sialocoele in a cat.