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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 positron emission tomography (PET / CT) findings of mediastinal neuroendocrine carcinoma and to improve the diagnostic accuracy of the disease. Methods The CT (n = 6) and PET / CT (n = 1) manifestations of 6 cases of mediastinal neuroendocrine carcinoma confirmed by pathology were retrospectively analyzed. Results Among the 6 cases, 3 were located in the anterior mediastinum, 2 in the anterior mid-posterior mediastinum and 1 in the mediastinum. The CT findings of 5 patients showed uneven density. Scattered dot-like calcification was found in the lesions, and the solid part of the enhanced scan was unevenly and moderately enhanced (n = 5) or significantly enhanced (n = 1). Six cases had oppression or infiltration of adjacent mediastinum structures. PET / CT examination, the lump standard uptake value (SUVmax) of 12.5. Conclusion Mediastinal neuroendocrine carcinoma showed malignant tumor on CT and PET / CT. If a larger tumor is located in the anterior mediastinum, there is scattered dot-like calcification, tumor compression or invasion of adjacent mediastinal structures, the disease may be considered.