Ossifying fibroma is a benign tumor that rarely affects the face bones and exclusively the maxilla. We report two cases of ossifying fibroma of the maxilla treated in our department of maxillofacial surgery and stomatology at IBN SINA university hospital in Rabat. The 1st case is a 38-year-old female, with no particular history, who presented a progressive swelling of the left face since 05 months. Extraoral examination demonstrated a grade I left exophthalmos, without diplopia or limitation of eye movements. Intraoral examination revealed a vestibular expression of the tumor. The 2nd case is also a 45-year-old female, who presented a progressive swelling of the left maxilla which gradually increased in size over a period of 04 months. Intra-orally, the buccal vestibule was completely obliterated with the mass. The two patients presented radiological images of similar density, made of a heterogeneous tissue of the maxillary containing calcifications but with different extension. Surgical excision was performed in both patients and the diagnosis was confirmed by histological study of the resected specimen. The evolution of the ossifying fibroma is insidious; this pathology has a clinical polymorphism and a good prognosis. The etiopathogenesis of this tumor is still unknown, it’s more likely to develop in the mandible and very rare in the maxilla. It differs from other types of fibroma by their clinical, radiological and histological aspects. However, only the pathological examination confirms the diagnosis.

We report a case of a 35 year old male, with no history, the patient presents flat angiomas all over the left half of the face since his childhood. 10 years ago the patient noticed the sudden appearance of tuberous angiomas, that were increasing in number. The patient consulted with our department and underwent surgical treatment. The result was extraordinary and the patient was very satisfied.

Background: Computerized tomography scan can show the detailed anatomy of the nose and paranasal sinuses. The sphenoid sinus is a very important corridor for the skull base because of its central position. This sinus has a great range of variation and can put structures around at risk during surgery. This study aims to examine the variation of the sphenoid sinus, and its relation to other structures around it, in this sample of Iraqi patients. Materials and Methods: CT scans of 122 patients, were obtained, and submitted for examination and measurements, during the period between September 2020 and September 2021. Observation of The sphenoid sinus pneumatization pattern, clival extension, Onodi cell, and lateral pneumatization of SS. As well as the SS measurements including the suprasellar depth, presellar depth, subsellar depth and sinus height. Exclusion was made for those with a previous history of sinus surgery and patients with tumours, sinonasal trauma or sinus fungal infection. Results: This study involved CT scans of 122 patients. The postsellar type of pneumatization was seen in 47.6%, sellar type 35.2% and presellar type 17.2%, while we did not see conchal type in this sample. Onodi cell was seen in 27.9%. The optic nerve, maxillary nerve, vidian nerve, and Carotid artery were protruding into the sinus in (35.2%), (14.8%), (46.8%) and (40.2%) respectively. We noticed that the full lateral type of lateral pneumatization is significantly associated with both vidian nerve protrusion and maxillary nerve protrusion; while right and left optic nerve protrusions were significantly associated with the corresponding side lesser wing type of lateral pneumatization, P - Value 0.001. Conclusion: Pneumatization of the sphenoid sinus has a great degree of variation in the population. Each patient has a different pneumatization pattern.