Computer tomographic control of conventional radiological findings due to space-occupying lesions of the bony pelvis

The CT and conventional radiological findings in 30 patients with spaceoccupying lesions of the pelvic bones were compared. 73% of the tumours diagnosed by CT were shown by conventional means and in 71% their extent was correctly estimated. Lesions at the ilio-sacral junction are not demonstrated as well by conventional methods as those near the hip joint. The lesions most frequently missed by conventional radiography lie in the dorsal part of the ilium and in the lateral mass of the sacrum. (orig.)