患者女性,28岁,2个月前剖腹产发现盆腔肿块。无任何不适,遂入院手术。术中见肿块8×8×7cm,包膜完整,切面呈灰红色,质嫩,部分区域出血。镜检:肿瘤细胞呈巢状排列,巢与巢之间有丰富的血窦,形成所谓“器官样结构”。有的细胞巢中央有腔隙形成。细胞为多边形,紧密相嵌,胞浆丰富,呈淡伊红色,细颗粒状,部分呈空泡状。胞核呈圆 The patient was female, 28 years old, and a pelvic mass was found 2 months earlier. Without any discomfort, she was admitted to the hospital. During the operation, the mass was 8×8×7cm, the capsule was intact, the cut surface was grayish red, tender, and bleeding occurred in some areas. Microscopic examination: The tumor cells are arranged in a nest, and there are rich sinuses between the nest and the nest, forming a so-called “organ-like structure.” Some cells have a lacuna in the center of the nest. The cells are polygonal, closely embedded, and abundant in cytoplasm. They are pale red, finely granular, and partially vacuolated. Nuclear round