Frontal sinus squamous cell carcinoma with intracranial, extraaxial extension in a dog with chronic sinonasal aspergillosis

摘要

A 10-year-old neutered male Golden Retriever with a history of chronic sinonasal aspergillosis was presented for unilateral nasal discharge, severe pain when opening the mouth, mildly reduced mentation and disorientation. CT revealed a mixed osteoproductive and osteolytic soft tissue mass that extended intracranially from the frontal sinus. Additionally, left-sided nasal turbinate destruction was evident, consistent with chronic destructive rhinitis. The dog was euthanised, and the mass was diagnosed as frontal sinus squamous cell carcinoma (SCC) with intracranial-extradural extension. This case report correlates diagnostic imaging and necroscopic findings of an osteoproductive and osteolytic frontal sinus SCC in a dog.