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what is red marrow reconversion of uncertain etiology

By Anonymous November 7, 2011 - 10:02am
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had recent mri of lumbar spine findings were. the bone marrow signal throughout the visualized lumbar spine on unbenhanced t-1 weighted images were diffusely low, suggestive of red marrow reconversion. and also are several benign-appearing hemangioma prominently featured in the L-4 vertebral body.

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HERWriter Guide


Here is the response to your question from our expert:

"In bone marrow there is yellow bone marrow and red bone marrow, they both have the same cell composition . The red bone marrow has many more blood vessels and produces read blood cells. The yellow bone marrow does not have as many blood vessels and produces  more fat cells.  Red marrow reconversion is an abnormal process where the red bone marrow starts to process fat cells instead of red blood cells.  This abnormal process is not cancerous, it is benign.
Unknown etiology means that the doctors are not sure why this abnormal process has occurred in your body.
Hemangioma is the abnormal build up of blood vessels in the marrow.

When we put all of this information together it seems that in your spine their were findings that your yellow marrow has been producing extra blood vessels in your spine which is creating the problems that were viewed in your imaging.  This is a benign process.  I hope this explains the diagnosis."

Anon, please let us know if this helps.



November 8, 2011 - 11:03am
HERWriter Guide

Dear Anonymous

Thank you for your question - it has been submitted to an expert for feedback. Please check back for an answer in the next few days.

Thanks for writing!


November 7, 2011 - 11:12am
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