Fig. 1: Axial, coronal and sagittal CT scan showing an osteoma of ethmoidal cells(yellow arrow).
References: Department of radiology, Charles Nicolle Hospital , Tunis, Tunisia
Fig. 2: Axial and coronal CT scan show giant aggressive osteoma of the ethmoidal cells and frontal sinus (green arrow).
References: Department of radiology, Charles Nicolle Hospital , Tunis, Tunisia
Fig. 3: Axial and coronal CT scan showing ground-glass opacities of the sphenoid extended to the sphenoid sinus related to a fibrous dysplasia (blue arrow).
References: Department of radiology, Charles Nicolle Hospital , Tunis, Tunisia
Fig. 4: Axial T2(A) and axial T1 post-gadolinium (B) weighted MRI images showing a large mass enhanced after injection of Gadolinium (blue arrow) involving the nasal fossa and the left maxillary sinus, with an extension to the nasopharynx through the choana. Note the columnar aspect(green arrow).
References: Department of radiology, Charles Nicolle Hospital , Tunis, Tunisia
Fig. 5: Coronal and axial enhanced CT scan show a squamous cell carcinoma centered on the left frontal sinus (blue arrow).
References: Department of radiology, Charles Nicolle Hospital , Tunis, Tunisia
Fig. 6: Axial and coronal enhanced CT showing a sarcoma centered on the left maxillary sinus (yellow arrow).
References: Department of radiology, Charles Nicolle Hospital , Tunis, Tunisia