Dissociation between hepatosplenic and marrow iron in liver cirrhosis.
Histochemical study of tissue iron in the various parts of the reticuloendothelial system in 15 subjects with cirrhosis was performed. Stainable iron in the liver and spleen sections, generally in large quantities, was found in 13 of 15 cases. Paradoxical association of hepatosplenic siderosis with depletion of marrow iron reserves was observed in seven subjects. In all seven, gross gastrointestinal blood loss had occurred during life and the source of bleeding from one or more anatomic lesions was identified at the time of autopsy. Depletion of marrow iron reserves in these seven subjects can be attributed to two factors: first, the available marrow iron stores were used for erythropoiesis; second, the ample hepatosplenic iron deposits could not be mobilized for transport to the bone marrow. Thus, hepatosplenic iron in cases of cirrhosis seems to be sequestered from its normal metabolic pathways.