Computed tomography of calvarial and petrous bone sarcoidosis

This report describes the radiographic features in a case of sarcoidosis involving both the frontal calvaria and the petrous bone. The plain radiographic and nuclear medicine findings were consistent with previous descriptions. High resolution CT demonstrated concentric growth with a lucent advancing margin, ghost-like remnant of partially replaced bone, crossing of suture lines, invasion of contiguous bones, and lack of associated soft tissue mass.