Eosinophilic granuloma of bone.

Eosinophilic granuloma of bone is an uncommon granulomatous process for which therapy recommendations vary considerably. Consequently, a survey of the world literature from 1940 to 1974 was undertaken in an attempt to develop more concrete guidelines. This survey revealed that the disease manifests itself primarily in males under 20 years of age of all races. The most common symptom is pain, with or without swelling. Multiple sites in a single case are frequent. The clinical course is generally benign, unlike Letterer-Siwe disease or Hand-Schuller-Christian disease. A remission rate of 95% was noted, with relapses usually occurring as distant disease within the first year. Simple excision or curettage was the most common surgical procedure utilized, and radiotherapy doses varied widely. Excellent local control of the disease can be provided using conservative surgery, low-dose irradiation, or both. Morbidity secondary to pathologic fracture or to overly aggressive treatment are the major concerns, not failure to control the disease.