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  • Title: Lymphangiography and thoracic duct embolization following unsuccessful thoracic duct ligation: Imaging findings and outcomes.
    Author: Nadolski GJ, Itkin M.
    Journal: J Thorac Cardiovasc Surg; 2018 Aug; 156(2):838-843. PubMed ID: 29759734.
    Abstract:
    OBJECTIVE: To summarize the imaging findings and outcomes of thoracic duct (TD) embolization (TDE) performed in patients with chylous leaks persisting after TD ligation (TDL). MATERIALS AND METHODS: In this review of 50 patients (30 males and 20 females; median age, 54 years) referred for TDE following unsuccessful surgical TDL, records were reviewed for lymphangiographic findings, technical success of TDE, and outcome of TDE. Comparisons between groups were performed using the Fisher exact test. RESULTS: The causes of chylothorax were traumatic in 39 patients (78%) and nontraumatic in 11 (22%). Lymphangiography identified missed TDL in 30 patients (60%) and complete TDL in 15 patients (30%); however, in 12 of these 15 patients, collaterals around the ligation site supplying the leak could be identified. Incomplete ligation was observed in 4 patients (8%). In 1 patient (2%), a second TD was identified circumventing a complete ligation of the main TD. TDE was performed in 49 patients, and TD disruption was performed in 1 patient. Resolution of the chylous leak occurred in 45 patients (90%). There were 3 minor complications that resulted in no clinical sequela. CONCLUSIONS: TDE produced cessation of chylous leak in the majority of the patients with persistent chylothorax after surgical TDL. Missed ligation is the most common finding on lymphangiography in patients with failed TDL. These findings support the use of image-guided closure of TD leaks.
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