title: 99MTc-metyhlene diphosphonate concentration in soft tissue malignant fibrous histiocytoma.
abstract: Four cases of non-calcifying soft tissue malignant fibrous histiocytoma are presented which showed concentration of 99mTc-methylene diphosphonate. Angiography was performed in one of the patients and it featured hypervascularity, tumor staining and early draining veins indicative of arteriovenous shunting. As with other extraskeletal non-calcifying entities which exhibit enhanced uptake of 99mTc-phosphate complex, the mechanism of concentration is largely conjectural. Malignant fibrous histiocytoma can be added to the expanding list of conditions which may portray in avidity for 99mTc-phosphate complex.
mesh_terms: D000368:Aged; D000792:Angiography; D002081:Buttocks; D004164:Diphosphonates; D005260:Female; D018219:Histiocytoma, Benign Fibrous / Q000098:blood supply / Q000000981:diagnostic imaging*; D006801:Humans; D007717:Knee; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D012782:Shoulder; D012983:Soft Tissue Neoplasms / Q000000981:diagnostic imaging*; D013667:Technetium; D013909:Thorax
chemical_list: D004164:Diphosphonates; D013667:Technetium