My brother, Ross Hall Skillern,1 recently reported a death following an extensive suppurative frontal sinusitis before the Triological Society in San Francisco, and I reported a death in a similar case at a meeting of the Eastern Section of the same society last winter in Washington, D. C. I shall now describe a recovery from the same condition.
I believe this is one of the few cases—I can find mention of only five others2—in which the patient has been reported as living following the spreading of the osteomyelitic process after a radical operation for the cure of empyemic frontal sinusitis.
There are two main divisions of osteomyelitis: one which apparently occurs spontaneously, with a slow course, and tends to self-limitation, and the other a malignant form. The latter is more or less diffuse, and usually follows traumatism. It causes softening of the bony structure, and spreads through the canals of