99Tcm-右旋糖酐淋巴显像诊断乳糜胸

目的 探讨⁹⁹Tc^m-右旋糖酐(DX)淋巴显像诊断乳糜胸的价值。方法 回顾性分析95例实验室检查证实单侧胸腔积液甘油三酯含量高于1.24 mmol/L而临床诊断乳糜胸患者的⁹⁹Tc^m-DX淋巴显像资料，观察双下肢淋巴引流、胸导管及静脉角区放射性分布及患侧胸腔有无异常放射性分布。结果 95例中，43例(43/95,45.26%)下肢淋巴回流正常，36例(36/95,37.89%)淋巴回流缓慢，16例(16/95,16.84%)肢体淋巴水肿；41例(41/95,43.16%)胸导管出口梗阻，表现为左静脉角持续或增宽显影、显像剂异常反流或双侧静脉角显影；89例(89/95,93.68%)患侧胸腔内放射性异常增高，其中2例(2/95,2.11%)见可疑乳糜漏出点，6例(6/95,6.32%)胸腔内未见明显异常放射性分布。结论 ⁹⁹Tc^m-DX淋巴显像有助于诊断乳糜胸。

99Tcm-dextran lymphoscintigraphy for diagnosis of chylothorax

Objective To explore the value of ⁹⁹Tc^m-dextran (DX) lymphoscintigraphy for diagnosis of chylothorax. Methods Data of ⁹⁹Tc^m-DX lymphoscintigraphy of 95 patients with diagnosed clinically chylothorax since laboratory examination confirmed unilateral pleural effusion with triglyceride content higher than 1.24 mmol/L were retrospectively analyzed. Lower limb lymphatic reflux, radiation distribution in thoracic duct and venous angle area and the affected chest were observed. Results Among 95 cases, 43 (43/95, 45.26%) were found with normal lymphatic reflux in lower extremity, 36 (36/95, 37.89%) with slow lymphatic reflux and 16 (16/95, 16.84%) with lymphedema. Obstruction of thoracic duct outlet was found in 41 cases (41/95, 43.16%), manifested as continuous or widening left venous angle imaging, abnormal reflux of imaging agent or bilateral venous angle imaging. Abnormal radioactivity increase in the affected chest were detected in 89 cases (89/95, 93.68%) including 2 cases (2/95, 2.11%) with suspicious chylous leakage points, while 6 cases (6/95, 6.32%) were found without obvious abnormal radioactivity distribution. Conclusion ⁹⁹Tc^m-DX lymphoscintigraphy was helpful for diagnosis of chylothorax.