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  • Title: MRI of anterior mediastinal tumors.
    Author: Ikezoe J, Takeuchi N, Johkoh T, Kohno N, Takashima S, Tomiyama N, Arisawa J, Yamagami H, Yoshioka H, Higashihara T.
    Journal: Radiat Med; 1992; 10(5):176-83. PubMed ID: 1438925.
    Abstract:
    To compare the abilities of MRI (magnetic resonance imaging) and CT to provide information about anterior mediastinal tumors, we retrospectively evaluated the MR (n = 28) and CT images (n = 25) of patients with anterior mediastinal tumors. T1-weighted and T2-weighted images were obtained with spin echo sequences using cardiac gating. Six of 12 thymomas and seven of nine teratomas showed characteristic findings by MRI, while four of the 10 thymomas and five of the eight teratomas were correctly diagnosed by CT. The other tumors did not show a characteristic MR appearance. All nine malignant tumors were correctly diagnosed as malignant lesions on MR images, while one false positive case and one false negative case were recorded on CT images. We conclude that MRI and CT provide nearly the same information for the evaluation of anterior mediastinal tumors. However, in some cases, only MRI can provide information about malignancy or a specific diagnosis.
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