Secondaries are common in all, except:
Metastasis may occur any bone but most commonly involve axial skeleton (e.g. veebra, pelvis, ribs,skull, sternum) > Proximal femur > humerus. Metastasis in small bone of hand and feet are uncommon and usually originates in cancer of lung, kidney and colon
Skull
Hand and feet bones
Proximal limb bones
Veebrae
Etiological Factors of Neoplasia