Figure 2. (a, b) T1 weighted images, (c) T2 weighted image, (d) enhanced T1 weighted image. Serial MR images show T1 low and T2 high signal intensity lesions involving the right petrous (arrowheads), occipital clivus (small straight arrows), mandibular condyle (curved arrow) and masticator space (large straight arrows) with strong enhancement to opacified mastoid air cells.