VALUE OF INTRANODAL DYNAMIC MAGNETIC RESONANCE LYMPHAGIOGRAPHY (DMRL) IN DETECTING THORACIC DUCT LEAK

Trần Nguyễn Khánh Chi1,, Nguyễn Ngọc Cương2, Lê Tuấn Linh2, Phạm Hồng Cảnh2
1 Hanoi Medical University
2 Hanoi Medical University Hospital

Main Article Content

Abstract

Purpose: To compare the value of intranodal dynamic magnetic resonance lymphagiography (DMRL) with Digital subtraction lymphagiography (DSA) in detecting thoracic duct leak. Materials and methods: 25 patients diagnosed with chylous leak (18 women, 7 men; 21 traumatic chylous, 4 nontraumatic chylous) underwent intranodal dynamic magnetic resonancce lymphagiography and digital subtraction lymphagiography at Radiology center of Hanoi Medical University Hospital from June 2019 to August 2021. Results: The results showed that the common locations of thoracic duct injury were the neck segment in 12/25 patients (48%) and the thoracic segment with 10/25 patients (40%). The most common form of thoracic duct lesions was extravation in 18/25 patients (72%). With lateral branch lesion morphology, DMRL compared with DSA has a sensitivity of 60%, a specificity of 100%, a positive predictive value of 100%, a negative predictive value of 91%. Regarding the ability to detect fistula, DMRL compared with DSA has a sensitivity of 91.7%, a specificity of 100%, a positive predictive value of 100%, a negative predictive value of 33.3%. Conclusion: Intranodal dynamic magnetic resonancce lymphagiography is a technique that has many advantages compared to previous methods of imaging the lymphatic system, with high sensitivity and specificity in detecting thoracic duct leak.

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References

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