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07 May 2025

Outcome of video-assisted thoracoscopic treatment of idiopathic chylothorax in 15 cats

To evaluate the outcomes and complications of video-assisted thoracoscopic (VATS) treatment of chylothorax in cats.

Multi-institutional retrospective study.

Fifteen client-owned cats.

The medical records of cats undergoing thoracoscopic thoracic duct ligation (TDL) for treatment of idiopathic chylothorax were reviewed. Cats undergoing additional procedures including thoracoscopic pericardectomy and/or laparoscopic cisterna chyli ablation (CCA)_were included. Follow up was obtained through communication with the referring veterinarian or owner.

Results: All cats underwent thoracoscopic TDL. Thirteen cats underwent simultaneous pericardectomy and two cats underwent laparoscopic CCA without pericardectomy. Conversion from a thoracoscopic to open approach was necessary in 2/15 (13%) of thoracic duct ligations and 1/11 (9%) of pericardectomies. The most common postoperative complication was persistent pleural effusion in five cats (33%). Four of 15 cats (27%) died or were euthanized prior to hospital discharge following surgery. Recurrence of effusion occurred in 1/7 (14%) of cats that sustained resolution of the effusion at the time of surgery with a median follow up of 8 months. The overall mortality attributed to chylothorax was 47%.

Thoracoscopic treatment of idiopathic chylothorax resulted in a low incidence of intraoperative complications or conversion in the study population; however, mortality related to feline idiopathic chylothorax remained high.

While VATS treatment of idiopathic chylothorax is technically feasible, further consideration of the underlying pathology and current treatment algorithm is needed to improve outcomes as this remains a frustrating disease to treat in the feline population.

Outcome of video-assisted thoracoscopic treatment of idiopathic chylothorax in 15 cats. Rachel Dickson et al. Vet Surg. 2024 May 2. doi: 10.1111/vsu.14098.

Source: https://onlinelibrary.wiley.com/doi/10.1111/vsu.14098

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Outcome of video-assisted thoracoscopic treatment of idiopathic chylothorax in 15 cats

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