Figure 11.
Intramuscular metastasis in a 52-year-old male patient with a history of advanced stage gastric carcinoma complaining of waist pain, bilateral thigh pain (more severe on the left thigh), radiating to both legs, numbness and left leg cramps. (a) Pelvic CT image showing a solid left gluteal mass containing diffuse necrosis and calcification and peripheral contrast attenuation. (b) Axial fat suppression contrast-enhanced T1 weighted MR image demonstrating a well-demarcated solid mass in the left gluteal and right piriformis muscles with significant contrast enhancement. In addition, the sciatic nerves fibres are seen to be surrounded by tumour masses and appear thickened with no contrast enhancement (arrows).