Member Comments are provided by individuals and reflect their personal opinions only. Under NO circumstances should you act on any advice or opinion posted in this forum. ALWAYS check with your personal physician before taking any action regarding your health! MedHelp International and our partners, sponsors and affiliates have no obligation to monitor any comments posted on this site, or the content and/or accuracy of such exchanges. MedHelp International does not endorse the views of any user.
Diagnostic Radiology (Expert Forum)
red marrow reconversion
Answered by
Sumer K Sethi, MD - Radiology
Teleradiology Providers
Delhi - India
Questions in the Diagnostic Radiology forum cover topics including body imaging, bone scans, breast imaging, CT scan, magnetic resonance imaging (MRI), MRA, NMR, ultrasound, and x-rays.
Doctor's Answer
by Sumer K Sethi, MD, Dec 11, 2008 11:58PM
, Dec 11, 2008 11:58PMTo: fish173
Normal bone marrow has yellow marrow and red marrow. Yellow marrow is more of fat and red marrow is more of haematopoitic tissue. in infants marrow is predominantly hematopoietic with the exception of epiphyses & apophyses, which are predominantly fatty throughout life. with skeletal growth, red marrow is gradually replaced by fat. red marrow persists longer in the vertebrae, pelvic bones, sternum, & proximal ends of the long tubular bones, during normal marrow conversion, residual islands of red marrow may subsist in the yellow marrow, as may fatty foci in red marrow.islands of red marrow residue may be a normal variant especially in obese women, cigarette smokers, marathon runners. It may be pathological some times in cases of hemolytic processes / anemia/hypoxia.
