Renal cortical necrosis.

changes here described from the appearance of secondary neoplasm, particularly neuroblastoma, may be difficult, and the diagnosis may only become clear with evolution of more typical radiological appearances. Eversole, Holman, and Robinson in 1957 described focal resorption of cortical bone as an early microscopical feature in the evolution of infantile cortical hyperostosis. The relative vascularity and the thinness of the cortical bone of the skull vault may be the reason why this histological change has not until recently been reported radiologically.