Abusuliman Mohammed, Aboeldahb Moataz, Olimy Abdullah, Abbas Omar, Abusuliman Amr, Jamali Taher, Gavidia Rosario Agustin, Yuan Lisi, Pompa Robert
Department of Internal Medicine, Henry Ford Hospital, Detroit, MI.
Mayo Foundation for Medical Education and Research, Rochester, MN.
ACG Case Rep J. 2024 Nov 27;11(12):e01562. doi: 10.14309/crj.0000000000001562. eCollection 2024 Dec.
Thymomas are rare, malignant, epithelial tumors of the thymus gland. Extrathoracic metastasis of thymoma is exceedingly rare, particularly when isolated to the liver. We report an 89-year-old man who presented with urinary retention. Exploratory computed tomography imaging revealed a heterogeneous mass in the aortopulmonary window and a 1.9 cm lesion in the left hepatic lobe. Results from magnetic resonance imaging, positron emission tomography-computed tomography, and histopathological analysis of biopsy samples collectively supported a diagnosis of metastatic type B2 thymoma. To the best of our knowledge, this is the oldest patient to be diagnosed with metastatic type B2 thymoma. Metastatic thymoma is difficult to identify, and patients with mediastinal mass identified after any presentation should be evaluated for malignant spread.
胸腺瘤是胸腺罕见的恶性上皮性肿瘤。胸腺瘤的胸外转移极为罕见，尤其是仅转移至肝脏时。我们报告一名89岁男性，因尿潴留就诊。计算机断层扫描成像检查发现主动脉肺动脉窗有一不均匀肿块，左肝叶有一个1.9厘米的病灶。磁共振成像、正电子发射断层扫描-计算机断层扫描结果以及活检样本的组织病理学分析共同支持B2型转移性胸腺瘤的诊断。据我们所知，这是诊断为B2型转移性胸腺瘤的年龄最大的患者。转移性胸腺瘤难以识别，对于出现任何症状后发现纵隔肿块的患者，均应评估有无恶性扩散。
