Fig. 2
From: Imaging characteristics of ovarian sclerosing stromal tumor
Case MR04. Axial T1WI (a) depicts a welldemarcated pelvic mass with low signal intensities. Axial T2WI (b) shows the mass with heterogeneous high signal intensity and a peripheral low signal rim. The scattered clusters and linear iso-hypointensity areas at the hyperintensity background within the neoplasm, i.e., “lake-island” sign, on T2WI (b, black arrow). Dynamic enhancement images showing early peripheral ring enhancement (c), and progressive and prolonged enhancement in the inner zone of the lesion in the late phases (d, e). The solid components in mass are comb- or wheel-like enhanced (e, black arrows)