[Cranial osteitis: a report on four cases, including a Gradenigo-Lannois syndrome (author's transl)].

Three cases of hematogenous cranial osteitis are described. The etiology in two cases was a staphylococcus aureus infection from meningeal septicemia. One of these patients died and chronic osteomyelitis developed in the second case. The third case was one of multifocal tuberculous infection, localized in the cranium but asymptomatic. The last case was a Gradenigo-Lannois syndrome, and its etiology, either chronic otitis or sphenoidal sinusitis, is discussed.