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Chylothorax in cats: 37 cases (1969-1989)
T W Fossum1, S D Forrester, C L Swenson
1Department of Small Animal Medicine and Surgery, College of Veterinary Medicine Texas A&M University, College Station 77843.
Journal of the American Veterinary Medical Association
|February 15, 1991
Summary
Chylothorax in cats is often linked to breed and can cause respiratory issues. Surgical interventions like thoracic duct ligation show limited success in resolving pleural fluid, with survival rates comparable to other treatments.
Area of Science:
- Veterinary Medicine
- Cardiology
- Pulmonology
Background:
- Chylothorax, characterized by chylous pleural effusion, presents a diagnostic and therapeutic challenge in feline medicine.
- Common clinical signs include dyspnea and coughing, impacting the quality of life for affected cats.
Purpose of the Study:
- To retrospectively evaluate clinical findings, diagnostic methods, and treatment outcomes in cats with chylothorax.
- To assess the efficacy of surgical interventions, specifically thoracic duct or cisterna chyli ligation.
Main Methods:
- Retrospective case review of 37 cats diagnosed with chylothorax across two institutions.
- Evaluation of clinical signs, diagnostic imaging (including mesenteric lymphangiography), and surgical procedures (thoracic duct ligation, pleuroperitoneal shunts, pleurodesis).
Main Results:
- Dyspnea and coughing were prevalent clinical signs; purebred cats were overrepresented in the study population.
- Thoracic duct or cisterna chyli ligation in 15 cats resulted in complete resolution of pleural fluid in 20%.
- Mesenteric lymphangiography revealed thoracic lymphangiectasia in most cats, while surgical outcomes for shunts and pleurodesis were poor.
Conclusions:
- Surgical ligation of the thoracic duct or cisterna chyli offers limited success for chylothorax resolution in cats.
- Survival rates did not significantly differ between cats treated with thoracic duct ligation and those receiving alternative therapies.
- Further research into the underlying causes and improved treatment strategies for feline chylothorax is warranted.