RT Journal Article
SR Electronic
T1 Giant Cell Tumor of the Thoracic Spine Simulating Mediastinal Neoplasm
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1723
OP 1726
VO 20
IS 9
A1 Hideyuki  Sakurai
A1 Norio Mitsuhashi
A1 Kazushige Hayakawa
A1 Hideo Niibe
YR 1999
UL http://www.ajnr.org/content/20/9/1723.abstract
AB Summary: A case of giant cell tumor of the thoracic spine simulating mediastinal neoplasm was identified on plain films, CT scans, MR images, and with scintigraphy. CT showed a hypervascular soft-tissue mass with shell-like calcification in the right upper mediastinum. MR imaging showed a collapse of the T1 vertebral body and a mass extending to the mediastinum. The mass had a low signal on T1-weighted MR images and a predominantly high signal on T2-weighted images with heterogeneity. Technetium-99m methylene diphosphonate bone scintigraphy showed intense uptake in both the T1 and marginal parts of the mediastinal mass. There was no accumulation of gallium-67 citrate, but 18-fluorine fluorodeoxyglucose positron emission tomography showed marked uptake. The variation in these imaging findings played an important role in the differential diagnosis of this uncommon mediastinal mass.