Fig. 7
From: Proton MR spectroscopy in characterization of focal bone lesions of peripheral skeleton
A30-year-old male patient with pain and swelling left wrist. a Radiograph shows subarticular left distal radial lesion with characteristic soap bubble appearance (arrow) suggestive of GCT. Radial cortex is intact. b The lesion is hypointense on T2-weighted coronal image, with the distinct transition from normal marrow (arrow). c MRS shows a tall choline peak at 3.2 ppm. d HNE 200× shows fragments of neoplastic stromal cells and numerous multinucleate giant cells suggesting GCT