A 77-year-old man had rapidly increased intramuscular tuberculous abscess i
n his left buttock. Radiographs showed a bone defect in the left ischium. P
ostcontrast CT scanning revealed marginal enhancement. MR imaging showed lo
w signal intensity on T1-weighted images and high signal intensity on T2-we
ighted images. T1-weighted MR images with Gd-DTPA enhancement showed enhanc
ement of the wall. Bone defect and marginal enhancement on postcontrast MR
images and on postcontrast CT images are image character of the intramuscul
ar tuberculous abscess. (C) 1998 Elsevier Science Ltd. All rights reserved.