Niimi T, Gotoh M
Department of General Thoracic Surgery, Yokkaichi Municipal Hospital, Yokkaichi, Japan.
Kyobu Geka. 2009 Feb;62(2):165-8.
We present a case of a 33-year-old man with a noninvasive thymoma undergoing extensive cystic degeneration. The mediastinal tumor was asymptomatic and first noted on a routine chest radiograph. Chest computed tomography (CT) and magnetic resonance imaging (MRI) showed a 11 cm cystic mass with some solid portions in the anterior mediastinum. A cystic thymoma was suggested. The mass and remnants of the thymus were removed by video-assisted thoracoscopic surgery. On cut section, the tumor was predominantly cystic, with several solid nodules randomly attached to the cyst wall. The cystic space was filled with turbid brown fluid. Histopathological examination revealed a World Health Organization (WHO) type B3 thymoma with foci of hemorrhage, necrosis and cystic degeneration, and absence of an epithelial lining of the cyst.
我们报告一例33岁男性患有非侵袭性胸腺瘤且发生广泛囊性变的病例。纵隔肿瘤无症状，首次在常规胸部X线片上被发现。胸部计算机断层扫描（CT）和磁共振成像（MRI）显示前纵隔有一个11厘米的囊性肿块，伴有一些实性部分。提示为囊性胸腺瘤。通过电视辅助胸腔镜手术切除了肿块及胸腺残余组织。在切面，肿瘤主要为囊性，有几个实性结节随机附着于囊壁。囊腔内充满浑浊的棕色液体。组织病理学检查显示为世界卫生组织（WHO）B3型胸腺瘤，伴有出血、坏死和囊性变灶，且囊肿无上皮内衬。
