###Human: What is RAEB? What can it lead to? ###Assistant: Hi.I have carefully worked through your case and want to assure you that proper care and expert opinion will be extended. Actually, when there is a hematology report which questions the quality of the biopsy specimen, we cannot just comment on the outcome of the test or to what should have had been there it was like that or the other way. The fibrino-leukocytic consistency just means that there were just a few leukocyte cells in the background matrix of fibers. I preferably suggest that this is a mistake in taking the proper specimen, or if the technique was fine then due to the replacement of the bone marrow with fibrous tissue to some extent causing anemia. My final suggestion is to repeat the diagnostic test and expert hands needed.