The axial skeleton is seeded more than the appendicular skeleton, presumably due to the persistence of red bone marrow in the former. The ribs, pelvis and spine are usually first affected. Batson's vertebral venous plexus allows cells to enter the vertebral circulation without first passing through the lungs.reast. Bone is the first site of metastasis in 26% of breast cancer patients. It is the most common site of metastatic disease, both at presentation and as the site of first recurrence. 7 Up to 85% of breast cancer patients develop skeletal metastases at some stage in the disease process.
PRL - Computer Definition. (Preferred Roaming List) The list of service providers stored in a CDMA cellphone that the phone is roaming outside its home area. The PRL should automatically be updated by the carrier; however, it may be manually reset and updated by the customer when there are roaming connection problems.
PRS is a subcategory of Number Translation Service (NTS), and all PRS numbers begin with 090 with 0909 reserved exclusively for adult content services.