Skull Base Osteomyelitis from Otitis Media Presenting as the Collet-Sicard Syndrome

Figure 4

MRI scan (axial cut) of the skull base showing a large lesion involving the region of the right jugular foramen (JF). The sigmoid-jugular venous complex (VC) seen on the left side is not apparent on the right side. The lesion extends laterally beyond the jugular foramen and enhances greater than the nasal mucosa (M), and the Eustachian tubal architecture is relatively preserved (arrow).