[Classification of skeletal neoplasms (author's transl)].

Complete documentation of the pathological spectrum of a great many similar cancer patients requires interdisciplinary coordination and the absence of ambition of any particular branch. The application of a TNM system devised by the authors for the classification of skeletal neoplasms showed in a retrospective study of 600 cases that the degree of infiltration into the periosteum and soft tissue, which opens more lymphatics to metastasizing tumor cells, is a more relevant parameter of the TNM system than the size of the tumor itself.