PT  - JOURNAL ARTICLE
AU  - Sakurai, Hideyuki
AU  - Mitsuhashi, Norio
AU  - Hayakawa, Kazushige
AU  - Niibe, Hideo
TI  - Giant Cell Tumor of the Thoracic Spine Simulating Mediastinal Neoplasm
DP  - 1999 Oct 01
TA  - American Journal of Neuroradiology
PG  - 1723--1726
VI  - 20
IP  - 9
4099  - http://www.ajnr.org/content/20/9/1723.short
4100  - http://www.ajnr.org/content/20/9/1723.full
SO  - Am. J. Neuroradiol.1999 Oct 01; 20
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.