Five cases are reported which fall into two distinct groups. In the first group there is the type of case most-often reported as chronic sclerosing osteomyelitis. Here the shaft of a long bone is involved, the symptoms are fairly clear, and the diagnosis readily established by the roentgen ray. No difficulty was encountered in their treatment.
The second group is more complicated. In the reports searched no mention of such a type was noted. The similarity in localization, symptoms, and roentgen-ray findings is interesting. All were treated in the same way; they were relieved by operation and have remained well. The wounds stayed closed and no recurrences, either local or metastatic, have thus far been observed. In two, cultures gave growth of staphylococcus aureus. Late x-ray examinations show a gradual return to normal contour and texture, once the irritant has been removed.