Ovarian Lesions with Hyperintensity on T1-Weighted Magnetic Resonance Imaging

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Ovarian Lesions with Hyperintensity on T1-Weighted Magnetic Resonance Imaging

The differential diagnosis of ovarian lesions with hyperintensity on T1-weighted magnetic resonance imaging (T1WI) is limited. Teratomas are the only lesions that have T1WI hyperintensity secondary to fat and are easily differentiated with fat-saturated images. Endometriomas are sometimes difficult to differentiate from hemorrhagic cysts. Certain imaging features may be helpful (Table 114.1). The types of T1WI hyperintense ovarian lesions include¹

Teratoma
Endometrioma
Hemorrhagic cyst
Hemorrhagic neoplasm
Mucinous lesions: Rare, in high viscosity lesions