title: Extraosseous localization of 99mTc-MDP in ganglioneuroblastoma.
abstract: A 2 1/2-year-old boy with a posterior mediastinal ganglioneuroblastoma was evaluated by bone scintigraphy using 99mTc-DMP and showed a marked increased uptake in the tumor mass. Although a routine chest X-ray and body CT scan failed to demonstrate calcification, X-ray examination of the removed tumor specimen revealed small scattered calcification. The proposed mechanisms of the radiopharmaceutical localization in benign and malignant tumors other than calcification/mineralization are discussed. Regardless of the mechanism, localization of a bone scanning agent in a tumor provides a rapid, simple, and noninvasive means of demonstrating tumor size, configuration, and the relation of the surrounding structures to the tumor.
mesh_terms: D001842:Bone and Bones / Q000000981:diagnostic imaging*; D002675:Child, Preschool; D004164:Diphosphonates; D005729:Ganglioneuroma / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013667:Technetium; D013669:Technetium Tc 99m Medronate
chemical_list: D004164:Diphosphonates; D013667:Technetium; D013669:Technetium Tc 99m Medronate