MR findings of struma ovarii.
This study was performed to characterize MR findings of struma ovarii. In 10 patients, T1- and fast spin echo T2-weighted MR images were obtained in the axial, coronal, and sagittal planes using 1.5 T MR units, and they were retrospectively evaluated for the site, size, components, signal intensity, and contrast enhancement.MR images showed a unilateral complex mass with a multilobulated surface and thickened septa, corresponding pathologically to thyroid follicles and the stroma. Cystic portions had variable signal intensities on T1- and T2-weighted images. The contents of cystic components showing low signal intensities both on T1- and T2-weighted images were viscid gelatinous materials (n=4). Solid portions were relatively well-enhanced. In conclusion, struma ovarii has some characteristic MR appearance of a multilobulated complex mass with thickened septa, multiple cysts of variable signal intensities, and enhancing solid components.
Kim
J C
JC
Department of Diagnostic Radiology, Chungnam National University Hospital, 640 Dacesa-dong, Jung-ku, 301-721, Taejeon, South Korea. jckim@co.kr
Kim
S S
SS
Park
J Y
JY
D000328:Adult; D000368:Aged; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000175:diagnosis*; D010053:Ovary / Q000473:pathology; D012189:Retrospective Studies; D013330:Struma Ovarii / Q000175:diagnosis*
D003287:Contrast Media; D019786:Gadolinium DTPA