小儿肾脏恶性肿瘤的CT诊断(附52例分析)

CT Manifestation of Malignant Renal Tumor in Childhood:A Review of 52 Cases

摘要: 目的　探讨小儿恶性肾肿瘤的CT表现特征。方法　回顾分析 5 2例经手术、病理证实的恶性肾肿瘤的CT表现。全部病例行CT平扫与增强检查, 15例同时行MRI检查。结果　 5 2例中, wilms瘤34例, 其中 2 9例残肾强化呈“新月形、环形”征 ;恶性杆状细胞瘤 4例, 均有瘤体大、大片坏死及肾包膜下新月形低密度积液 ;透明细胞肉瘤 2例, 颅骨转移是重要佐征 ;肾细胞癌 3例, 1例有钙化 ;肾淋巴瘤 6例, 双肾呈多个类圆形低密度结节 ;白血病 3例, 双肾呈低密度对称性增大, 无强化。结论　CT检查可准确显示肾肿瘤的部位、大小、侵犯范围、影像特点及转移情况, 为肿瘤的临床分期、制定治疗方案、估计预后提供重要依据

Abstract: Objective To investigate the imaging manifestation of malignant renal tumor with CT. Methods Retrospectively review 52 cases of surgically and pathologically confirmed malignant renal tumor. Uncontrast and contrast CT was undertaken in all 52 patients in which 15 patients had MRI examination. Results The residual normal renal tissue of 29 cases of 34 cases of Wilms tumor enhanced and manifested “crescent sign” or “ring sign”. Four cases of malignant rabdoid tumor manifested as large mass with notable necr...