[Intracranial complications of sinusitis].

Background: Intracranial complications of sinusitis are always a subject of actuality. They present diagnostic and therapeutic problems.

Aim: To study the clinical characteristics and treatment modalities for intracranial complications of sinusitis while insisting on their severity.

Chondrosarcoma of sinonasal cavity: a case report and brief literature review.

Background: Chondrosarcomas are slow-growing malignant tumors that usually arise from cartilaginous structures. It may occur in the head and neck region with a predilection for the maxillofacial skeleton, where it has been reported to occur particularly in the mandible and maxilla. Chondrosarcoma of the sinonasal tract is very rare.