Peer-reviewed veterinary case report
Dog with swollen painful knee joint diagnosed with synovial hemangioma
By Miller, M A et al.·Published in Veterinary pathology·2007·Department of Veterinary Pathology, United States·View original on PubMed →
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Original publication title: Synovial hemangioma in the stifle joint of a dog.
- Species:
- dog
Plain-English summary
An 8-year-old male Belgian Sheepdog was brought in for lameness in his left leg that had lasted for three months, along with swelling and pain in the knee joint. After examining the joint, the vet found a rare growth called a synovial hemangioma, which is a benign tumor made up of blood vessels. To treat it, the vet performed an amputation of the leg to remove all the affected tissue. Six months later, the dog was doing well and showed no signs of the tumor returning.
People also search for: dog limping left leg · Belgian Sheepdog knee pain · synovial hemangioma treatment
Abstract
Synovial hemangioma was diagnosed in an 8-year-old castrated male Belgian Sheepdog with lameness of 3 months' duration. Pain, soft-tissue swelling, and hemarthrosis were localized to the left stifle joint. Projections of synovial membrane with reddish-purple nodules, excised via arthrotomy, were composed histologically of variably sized vascular channels that were lined by well-differentiated endothelial cells and separated by fibrous septa. Distension of some channels resulted in endothelial disruption, thrombosis, hemorrhage, necrosis, and focal spindle-cell proliferation. The limb was amputated to remove remaining neoplastic tissue. The hemangioma extended focally into the joint capsule and popliteal soft tissue but did not invade skeletal muscle or bone. The dog was free of detectable neoplasia 6 months after amputation. Synovial hemangioma is a rare benign vascular proliferation in people, most commonly in the knee, and should be included in the differential diagnosis for canine synovial tumors.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/17317807/