in guideline Abnormal Nervous System Morphology Spinal Cord Infarction Sufficient NCIT:C99063 Can be treated with exchange transfusion (SCDO:0001303) http://purl.obolibrary.org/obo/NCIT_C99063 Ischemic necrosis of the spinal cord caused by occlusion of the arteries that supply blood to the spinal cord. Signs and symptoms include intermittent back pain, pain in the legs, paralysis, and incontinence. SCDO:0005226 Sickle Cell Disease: The Clinical Care Guidelines of the Sickle Cell Unit Evidence-Based Management of Sickle Cell Disease