ABSTRACT
Tumours, tumour-like lesions and cysts are considered together, partly because their clinical presentation and management are similar and partly because the definitive classification of bone tumours is still evolving and some disorders may yet move from one category to another. Benign lesions are quite common, primary malignant ones rare; yet so often do they mimic each other, and so critical are the decisions on treatment, that a working knowledge of all the important conditions is necessary.
