[Megaloblastic vitamin B 12 deficiency anemia with erythroleukemic blood picture].

Report on a case of severe megaloblastic anemia in a vegetarian, associated with marked erythroleukemic blood findings probably caused by infections (bronchopneumonia, asthmatic bronchitis, urinary tract infection) and severe heart failure. Successful treatment of the above mentioned complications resulted in almost complete disappearance of pathologic cells from the blood even before vitamin B12 treatment was started. With this therapy complete recovery was achieved and the signs suspect for erythroleukemia in blood and bone marrow disappeared definitively. The case also fulfilled all the criteria of pernicious anemia (Schilling's test and determination of intrinsic factor were not done).