Summary
The clinical, radiographical and histo-pathological findings of a chondrosarcoma in
the humerus of a goat are discussed. An 11-year-old female Saanen goat was admitted
for evaluation of chronic, progressive left forelimb lameness. Clinical examination
revealed signs of pain in the shoulder region. Radiographs of the scapulohumeral joint
showed a large lytic lesion of the proximal third of the humerus with cortical destruction,
intralesional calcification and marked periosteal reactions. Differential diagnoses
included aggressive bone lesions as seen with osteomyelitis or a primary bone tumour,
such as osteosarcoma, chondrosarcoma or fibrosarcoma. The goat was euthanatized for
humane reasons because of the poor prognosis. On the basis of the histopathological
findings, the lesion was diagnosed as grade II chondrosarcoma. The tumour had already
spread to the lungs and the left prescapular lymph node at the time of diagnosis.
Keywords
Goat - lameness - tumour - chondrosarcoma - humerus