Thymic masses on MR imaging

P. L. Molina, M. J. Siegel, H. G. Glazer

Research output: Contribution to journalArticlepeer-review

62 Scopus citations


MR imaging is an excellent technique for identifying and defining the extent of thymic tumors. T1-weighted spin-echo MR images (e.g., 600/15 [TR/TE]) best demonstrate tumor extent, and T2-weighted images (e.g., 2500/90 [TR/TE]) help differentiate 'cystic' from solid thymic masses. Cyst formation and/or hemorrhage appear as areas of high signal intensity (greater than that of fat) on T2-weighted images. Focal areas of low signal intensity (less than that of muscle) correspond pathologically to fibrous capsules and septa, air, or calcification. In this report, the MR appearance of the normal thymus is reviewed briefly, and the gamut of abnormal thymic masses on MR is illustrated.

Original languageEnglish
Pages (from-to)495-500
Number of pages6
JournalAmerican Journal of Roentgenology
Issue number3
StatePublished - 1990


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