Massive haematoma formation associated with proximal popliteal artery haemangioendothelioma in a dog

Vetsuisse Faculty, University of Zürich, CH-8057 Zürich, Switzerland.
Journal of Small Animal Practice (Impact Factor: 1.09). 11/2011; 52(11):612-5. DOI: 10.1111/j.1748-5827.2011.01130.x
Source: PubMed


A mixed breed dog presented with diffuse unilateral hind limb swelling, which ultrasound and cytology confirmed to be caused by severe haematoma formation. Multi-detector computed tomography (MDCT) angiography allowed distinct visualisation of an anomalous segment of the proximal popliteal artery, the presumed origin of the self-sustaining haematoma. Histopathology classified the malformed vessel as a haemangioendothelioma, a neoplasia of intermediate malignancy. Considering this as differential diagnosis to a neoplastic vascular alteration of high malignancy (such as haemangiosarcoma) might alter choice of treatment in future cases with similar clinical and imaging findings.

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