Ossifying fibroma in a llama

A 4.5-year-old llama was admitted for evaluation of a firm mass rostral and ventral to the medial canthus of the left eye. Mucopurulent nasal discharg e and absence of airflow through the left nostril were noted. Radiographs o f the skull revealed a sharply demarcated soft tissue mass with faint miner alization. Endoscopy of the nasal passages revealed a mucosa-covered mass o riginating in the area of the second premolar, extending to the edge of the soft palate, and obstructing the airway. Examination of the oral cavity re vealed a missing second molar and a mass protruding 2-cm from the empty alv eolus. An ossifying fibroma, a previously unreported tumor in llamas, was d iagnosed at postmortem examination.