Article Figures & Data
Figures
- Fig 1.
A, Axial T1 postcontrast fat-saturation MR image through the temporal bone demonstrates a peripherally enhancing posterior fossa or retrosigmoid LCH lesion (arrow). B, Axial standard algorithm postcontrast correlating CT scan demonstrates the same LCH lesion (arrow) with osseous destructive changes.
- Fig 2.
A, Axial fat-saturated postcontrast T1 MR image through the temporal bone shows a heterogeneous avidly enhancing lesion within the right petrous apex (arrow) found to be an RMS. B, Axial postcontrast correlating CT image in a bone window shows the same lesion (arrow) with expansile changes to the right petrous apex.
Tables
Temporal bone subsite scores for LCH and RMS lesions and associated P values
Subsite LCH RMS P Value Middle ear 48% 53% .67 Mastoid 82% 33% .001 Petrous apex 11% 33% .12 Retrosigmoid/posterior cranial fossa 21% 0% .07
