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Canine peritoneal and pleural larval mesocestoidosis with sarcoma development
Alyssa R LeComte1, Katia R Groch1, Kellyn E McNulty2
1Department of Veterinary Pathobiology, Texas A&M University, College of Veterinary Medicine and Biomedical Sciences, 4467 TAMU, College Station, TX 77843, USA.
Veterinary Parasitology, Regional Studies and Reports
|February 25, 2026
Summary
This study reports a rare case of canine larval mesocestoidosis. A dog developed a soft tissue sarcoma, possibly linked to chronic inflammation from Mesocestoides tapeworm larvae.
Area of Science:
- Veterinary Pathology
- Parasitology
- Canine Oncology
Background:
- Peritoneal cestodosis is a parasitic infection.
- Mesocestoides spp. are tapeworms that can cause larval infections in dogs.
- Soft tissue sarcomas are malignant tumors of mesenchymal origin.

