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Osteosarcoma 11 years after TPO
TPO (triple pelvic osteotomy) has become a very popular and effective therapy in dogs with severe hip dysplasia. Are these dogs at an increased risk to develop osteosarcomas later in their life? A very interesting case report!

An osteosarcoma (OSA) involving the right pelvis was diagnosed in a 12-year-old golden retriever 11 years after triple pelvic osteotomy (TPO) surgery.

The dog was presented with a 12-week history of nonweight-bearing lameness of the right hind limb.

Radiographs demonstrated an aggressive bone lesion of the right ilium with profound periosteal proliferation and punctate lysis that extended along the ilium caudally and into the right ischium, with its epicenter at the level of the right TPO plate.

Necropsy revealed that the entire right hemipelvis, especially the ischium, was markedly thickened and firm with irregular margins. Histopathology was consistent with a diagnosis of OSA.



Source: Brian W. Rose, Robert E. Novo, Erik J. Olson (2005): Osteosarcoma at the Site of a Triple Pelvic Osteotomy in a Dog. In: Journal of the American Animal Hospital Association 41:327-331 (2005)



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SMALL ANIMAL PRACTICE

Patient-specific facemask to facilitate brain biopsymembers
The objective of this pilot study was to describe the application and first preliminary data of a novel MRI and CT compatible patient-specific facemask for stereotactic brain biopsy of intracranial lesions in dogs. Five client-owned dogs presenting for neurological deficits consistent with forebrain disease were included in the study. All dogs had MRI findings consistent with an intracranial lesion. But biopsies in this region are not easy to obtain. Does an individual face mask help?

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