Fig. 8
From: The pterygopalatine fossa: imaging anatomy, communications, and pathology revisited
a Invasive fungal sinusitis caused by mucormycosis in a 54-year-old diabetic male. Axial contrast-enhanced FS T1W MR image shows right maxillary sinusitis with a formation of a rim-enhancing collection in the right PPF (arrow) in keeping with a fungal abscess (which was surgically drained later). Extension of the inflammatory changes into the right ITF (curved arrow) via the PMF. b Axial contrast-enhanced FS T1W MR image of the same patient shows involvement of the right V2 (thin arrow) and intracranial extension, as evidenced by the abnormal dural enhancement in the antero-lateral of the right middle cranial fossa (dashed arrow). The cranial aspect of the fungal abscess in the right PPF (thick arrow) with extension of the inflammation into the right ITF (curved arrow) and right sphenoid sinusitis. c Coronal inversion recovery MR image of the same patient shows marrow oedema of the right greater wing of the sphenoid bone (thick arrow) in keeping with fungal osteomyelitis. The left greater wing of the sphenoid bone (thin arrow) is normal