摘要
目的研究分析肾上腺节细胞神经瘤的CT特点,以提高对本病的认识和诊断正确率。方法回顾性分析17例经手术病理证实的肾上腺节细胞瘤的CT表现。结果肿瘤位于右侧13例,左侧4例,均为单发,大小1.5-7.2cm,平均（4.2±1.9）cm,呈椭圆形、类圆形或不规则形,边缘清晰,斑点状钙化4例,囊变1例。平扫CT值28.0-43.8HU,平均（33.6±4.7）HU;增强后动脉期均无明显强化,CT值21.5-49.4HU,平均（37.3±6.8）HU;静脉期多轻度强化,CT值27.9-62.2HU,平均（45.0±9.7）HU;其中5例增强后动脉期及静脉期均无强化。术后对13例患者进行3-48个月随访（平均15月）,2例复发,复发时间分别为术后9、12个月。结论肾上腺节细胞神经瘤CT平扫边界清晰,密度低于周围肌肉,增强后呈轻度延迟性强化或无强化。
Objective To study the CT features of adrenal ganglioneuroma（ AGN） and to improve the recognition of the disease and diagnostic accuracy. Methods CT findings of 17 patients with surgery and pathology proven AGN were retrospectively analysed. Results The tumors were located in the right side 13 cases and in the left in 4 cases. All lesions were single,where in the size was（ 4. 2 ± 1. 9） cm（ range,1. 5 - 7. 2 cm）,showed oval or round-like or irregular in shape,well-defined. The tumors showed punctate calcification in 4 cases and capsule in 1 case. The CT value of the plain scans was（ 33. 6 ± 4. 7） HU（ ranged,28. 0 - 43. 8 HU） in seventeen cases. On dynamic CT examination,the lesions displayed no enhancement in all cases. The CT value of lesions was 37. 3 ± 6. 8 HU（ ranged,21. 5 - 49. 4 HU）. During the portal venous phase of CT,the majority of cases showed slight enhancement,CT value of ranged from 27. 9 to 58. 0 HU and mean 45. 0 ± 9. 7 HU. Five cases showed no enhancement during the arterial and portal phase. Thirteen patients with resected AGN had two recurrence during a median follow-up of 15months（ range,3 - 48 months）. Time of recurrence were 9 and 12 months,respectively. Conclusion On CT imaging,AGNs appear as well circumscribed masses with lower attenuation（ hypodense） than that of muscle attenuation on CT. Post-contrast shown mild delayed or none enhancement.
出处
《医学影像学杂志》
2016年第2期280-283,共4页
Journal of Medical Imaging
