Computed tomography (CT) and magnetic resonance imaging (MRI) findings of ovarian sclerosing stromal tumour
The aim of this study was to elucidate the computed tomography (CT) and magnetic resonance imaging (MRI) characteristics of sclerosing stromal tumours (SSTs) to facilitate accurate diagnosis and differentiation of ovarian tumours. This multicenter retrospective study included 34 patients who underwent preoperative CT and/or MRI scans and were subsequently diagnosed with SST through surgical pathology. Three radiologists independently evaluated the CT and MRI images. The variables assessed encompassed demographic information, imaging features, and pathological findings. The 34 lesions were categorised as cystic-solid (58.8%), predominantly cystic (32.4%), or nearly solid (8.8%). The lake-island sign was identified in 30 cases (88.2%), while the serrated sign was observed in 26 cases (76.5%). Marked haemangioma-like enhancement was noted in 24 cases (70.6%), whereas mild to moderate enhancement was observed in 10 cases (29.4%). Vascular pedicles adjacent to the tumour were present in 18 cases (52.9%). SSTs characteristically manifest as cystic-solid masses exhibiting a peripheral serrated sign along the wall and a central lake-island sign, accompanied by significant haemangioma-like prolonged enhancement.