<prompt> Least common quadrant in cancer breast isUpper outerLower outerSub areolarLower inner  <response>: Most malignant type of CA breast : Inflammatory breast cancer Best prognosis is seen in : Tubular MC site of CA breast : Upper outer quadrant left breast right Least common site of CA breast lower inner quadrant MC site of metastasis is Bone osteolytic deposits in lumbar veebrae Femur Thoracic veebrae Rib Skull Ref: Sabiston 20th edition Pgno :837 