Radiosurgery for Metastatic Spinal Tumors: Follow-Up MR Findings

Initial and 27-month follow-up MR and CT images in 52-year-old man with lung cancer. A and B, T2 signal intensities of metastatic lesion in L3 body and right pedicle increased and intermixed with dark signal intensity on T2-weighted axial and sagittal images. C, Sclerotic changes are seen on follow-up CT image.

Expanded appearance with progressed sclerotic change. Initial and 11-month follow-up MR and CT images in 47-year-old woman with breast cancer. A, Signal intensity of metastatic lesion changed to dark signal intensity and area of signal intensity changes seemed to be increased on T2-weighted axial image. B, Contrast enhancement was not seen on contrast-enhanced T1 axial images. C, On CT image, sclerotic changes progressed at the periphery of the lesion.

Tumor growth without changes in T2 signal intensity and contrast enhancement pattern. Initial and 2-month follow-up MR images in 47-year-old man with hepatocellular carcinoma. A, T2 signal intensity shows no significant interval change on follow-up T2 sagittal image. B, There was also no significant interval change in contrast enhancement pattern on contrast-enhanced T1-weighted axial image, but tumor volume slightly increased with compression of dural sac.