<prompt> Not true about bone metastasisUncommon distal to elbow and knee.Breast secondary may be osteoblasticRenal cell carcinoma secondary are expansileSoft tissue sarcoma causes bony metastasis.  <response>: Ans is d ie soft tissue sarcomas causes bony metastasis Most common cause of osteoblastic metastasisIn males--- Prostate Cancer In Females-- Breast CancerSkeletal sites most frequently involvedSpine proximal femur pelvis ribs sternum proximal humerus skullLytic expansile metastasis seen inRenal Cancer Thyroid carcinomasOsteolytic lesions are associated with hypercalcemia and excretion of hydroxyproline - containing peptides.Osteoblastic lesions are associated with increased levels of serum alkaline phosphatase.Metastasis distal to knee and elbow is rare and usually arises from a primary tumors of theBronchus Colon or Bladder 