纵隔神经内分泌癌的CT、PET/CT表现(附6例报告)  

CT and PET/CT Findings of Neuroendocrine Carcinoma of the Mediastinum(6 Cases)

作　　者：李靖煦[1] 关玉宝[1] 顾莹莹[2] 陈璧颖[1] 钱元新[1] 

机构地区：[1]广州医学院第一附属医院放射科,510120 [2]广州医学院第一附属医院病理科,510120

出　　处：《临床放射学杂志》2013年第2期198-202,共5页Journal of Clinical Radiology

摘　　要：目的探讨纵隔神经内分泌癌的CT及正电子发射体层摄影术(PET/CT)表现,提高对该病的诊断准确率。方法回顾性分析经病理学证实的6例纵隔神经内分泌癌的CT(n=6)及PET/CT(n=1)表现。结果 6例中,3例位于前中纵隔,2例位于前中后纵隔,1例位于中纵隔;5例CT表现为密度不均匀,其内可见大片坏死囊变区,1例密度均匀;3例病灶内可见散在点状钙化;增强扫描肿瘤实性部分呈不均匀中度强化(n=5)或明显强化(n=1);6例均有压迫或侵犯邻近纵隔结构征象;1例行PET/CT检查,肿块标准摄取值最大值(SUVmax)为12.5。结论纵隔神经内分泌癌在CT、PET/CT上呈恶性肿瘤表现。若一较大肿瘤位于前中纵隔,其内出现散在点状钙化,肿瘤压迫或侵犯邻近纵隔结构,应考虑到该病可能。Objective To investigate the CT and PET/CT findings of neuroendocrine carcinoma in mediastinum, and to improve diagnostic accuracy. Methods CT and PET/CT findings of 6 patients with neuroendocrine carcinoma in mediasti- num confirmed by pathology were retrospectively analyzed. Results Of the 6 cases, 3 were located in front middle medi- astinum, 2 in front middle posterior mediastinum, 1 in middle mediastinum. 5 lesions had heterogeneous density with large area of necrosis on CT images, 1 lesion had homogeneous density. Scattered punctate calcifications were found in 3 lesions. The solid portion of the lesions had heterogeneous moderate enhancement （ n = 5 ） or marked enhancement （ n = 1 ） on en- hanced CT images. All tumors had compressed or invaded the adjacent mediastinal structure. One patient had PET/CT ex- amination, and the SUVmax of the mass was 12.5. Conclusion Mediastinal neuroendocrine carcinoma has the malignant signs on CT and PET/CT images. A large tumor located in front middle mediastinum, with scattered punctate calcifica- tions, compress or invade the adjacent mediastinal tissue, should be considered the possibility of mediastinal neuroendo- crine carcinoma.

关 键 词：神经内分泌癌 纵隔 体层摄影术 X线计算机 正电子发射体层摄影术 

分 类 号：R734.5[医药卫生—肿瘤]