Hyaline droplet formation in the renal epithelium of patients with haemoglobinuria.

Renal hyaline droplet formation is described in two patients with haemoglobinuria. The droplets were shown to contain haemoglobin by a histochemical method. The findings are correlated with the results of recent experimental studies which have demonstrated that renal hyaline droplets are phagosomes containing absorbed protein and not products of cellular degeneration as was previously thought.