[Chondroma rodens in a dog (author's transl)]

A description of a case of oral chondroma rodens in a dog is given. The tumor was found when five years' specimens of bone tumors were reevaluated. The tumor which had been removed from the oral cavity of a 10 year old female German shepherd consisted of fibroblast like cells which modified to chondrocytes giving the tumor tissue a configuration of island of calcified cartilage embedded in fibrous tissue. The tumor is compared to six other described cases known by the authors. Diagnosis and differential diagnosis is discussed.