A Rare Case of Cord Compression From Extra-Medullary Hematopoiesis (EMH) in Beta Thalassemia.

Cord compression can arise from many different etiologies -- including trauma, degenerative changes, growths, neoplasms, or even abscesses. While some etiologies can cause symptoms such as weakness or motor deficits, others can simply present as pain. A rare cause of cord compression is extramedullary hematopoiesis (EMH), or the growth of blood cells outside the bone marrow. This rare, abnormal growth of cells can result in severe complications such as increased intracranial pressure and motor and sensory impairment. General clinicians should strive for early and prompt diagnosis of cord compression whenever possible, especially in patients who present with acute neurological deficits. We present a case of a 27-year-old female with beta thalassemia major (BTM) and transfusional hemosiderosis, who came in with progressive lower extremity weakness, numbness and urinary retention, and was diagnosed with acute cord compression from EMH.