Abstract #0304

Takeuchi M, Matsuzaki K, Nishitani H, Uehara H

Very rare hypointense malignant tumors of the ovary on T2-weighted images are evaluated with pathologic correlation. T2 shortening of the pathologies were caused by primary and secondary ovarian stromal proliferation in Krukenberg's tumor, malignant carcinoid tumor, and malignant Brenner tumor, and by mucinous, viscid proteinous material and/or coagulated necrosis in mucinous cystadenocarcinoma, clear cell carcinoma (solid variant), and choriocarcinoma. Preoperative diagnosis of these tumors from benign sex-cord stromal tumors, which may often show hypointensity on T2-weighted images, is important and should be made by their characteristic clinical and imaging findings.