THE STAGING OF MALIGNANT BONE-TUMORS

Malignant bone tumors require the same careful staging as, for example , lung cancer. However, well-established staging systems for non-osseo us tumors are not suitable for bone tumors. Therefore we present Ennek ing's staging system for malign bone tumors here, which is better adap ted to the special problems of these entities because it integrates cl inical, radiological and histological findings. The weak points of Enn eking's staging system (e.g. inflexibility, changes in radiological mo dalities in the past 20 years) are discussed.