論文の公開元へ脳転移を来した卵巣明細胞癌の１例―CT，MR 所見を中心に
概要
Ovarian clear cell carcinoma rarely metastasizes to the brain, although it usually metastasizes to the perito¬neum and the abdominal lymph nodes. We report a case of brain metastasis from ovarian clear cell carcinoma with emphasis on CT and MR findings. A woman in her 70s developed cognitive impairment and gait disturbance about one and a half years after surgery and adjuvant chemotherapy for right ovarian clear cell carcinoma. Non-contrast CT images of the brain showed a well-delineated low-density tumor with a diameter of 4 cm in the right basal ganglia. The tumor exhibited high signal intensity on MRI T2-weighted images and low signal intensity on T1-weighted images. Linear and nodular parts within the tumor exhibited high intensing on diffu¬sion-weighted images and low signal on the ADC map, suggesting tumor hypercellularity. Contrast enhanced T1-weighted images showed heterogeneous enhancement. Peritumoral edema was not observed. Brain metastasis from ovarian clear cell carcinoma was diagnosed pathologically. CT and MR findings of the brain metastasis were similar to those of the primary ovarian clear cell carcinoma in the pelvis. Shinshu Med J 70 /1"—182, 2022 (Received for publication September 21,2021;accepted in revised form January 13, 2022)
