Background. Imerslund syndrome, a recessive autosomal disease, initial
ly described by Imerslund and Grasbeck in 1960, associates megaloblast
ic anemia and proteinuria. Case report. - We report on six cases, stud
ied in five different proteinuria was present in five, at the time of
diagnosis. Hemogram and decreased serum vitamin B12 levels were consis
tent with the diagnosis in all cases. Intra-muscular injections of cya
nocobalamine was instituted on a life-time basis and the long term pro
gnosis is good. Conclusion. - The diagnosis should be evoked when the
three typical features are present: macrocytic anemia, decreased serum
B12 level and proteinuria. It will be confirmed by the bone marrow me
galoblastic aspects and the Schilling test findings.