The radionindium bone-marrow image in acute (malignant) myelofibrosis.

A patient with a rapidly fatal case of acute myelofibrosis had a radioindium bone-marrow image that unexpectedly showed a normal pattern of distribution, unlike the more typical forms of chronic myelofibrosis or agnogenic myeloid metaplasia. The rapid progression of the disease and the unique handling of radioindium by the reticuloendothelial system may explain the discordant findings.