Endo Katsuhiko, Kato Masataka, Sano Masaaki
Department of Surgery, Nagoya Memorial Hospital, Nagoya, Japan.
Kyobu Geka. 2022 Aug;75(8):617-621.
Thymic cancer associated with spontaneous regression of thymic cysts is a rare disease. A 47-yearold man was referred to our hospital for right chest pain and chest abnormal shadow. Chest computed tomography( CT) revealed a solid lesion 1.3 cm in diameter and a cystic lesion 1.0 cm in diameter at the right anterior mediastinum. A second CT study after six months showed a solid lesion increased to 1.7 cm in diameter and a cystic lesion reduced to 0.7 cm in diameter. A second magnetic resonance imaging (MRI) showed a cystic lesion reduced and high signal intensity region in the thymus enlarged on T2-weighted imaging. Under the diagnosis of thymoma associated with multilocular thymic cysts, total thymectomy was performed for these mediastinal lesions by video-assisted thoracic surgery. Histopathological finding was thymic squamous cell carcinoma (Masaoka stage II) associated with multilocular thymic cysts. Additional postoperative radiotherapy was performed, and there has been no recurrence after one postoperative year.
与胸腺囊肿自发消退相关的胸腺癌是一种罕见疾病。一名47岁男性因右胸痛和胸部异常阴影被转诊至我院。胸部计算机断层扫描（CT）显示右前纵隔有一个直径1.3厘米的实性病变和一个直径1.0厘米的囊性病变。六个月后的第二次CT检查显示实性病变增大至直径1.7厘米，囊性病变缩小至直径0.7厘米。第二次磁共振成像（MRI）显示在T2加权成像上，囊性病变缩小，胸腺内高信号强度区域扩大。在诊断为多房性胸腺囊肿相关胸腺瘤后，通过电视辅助胸腔镜手术对这些纵隔病变进行了全胸腺切除术。组织病理学检查结果为多房性胸腺囊肿相关的胸腺鳞状细胞癌（Masaoka II期）。术后进行了辅助放疗，术后一年无复发。
