osteoid osteoma at the child [about 9 cases]

The osteoid osteoma is a benign lesion characterized by multiple clinic and topographic aspects-exposing to diagnostic and therapeutic problems. Through a retrospective study managed form 1981 to 2002, about 9 cases, the diagnostic means and the results of therapeutic follow-up have been rated. The mean age was 10 years old and the sex-ratio was about 1.22. in 66% of the cases, the lesion is localized in the long borne of the lower limb and in 22% of the cases at the level of the rachis. The lesion was diaphysial in 71% of the cases and epihysometaphysial in 29% of the cases. The motive of consultation was a typical pain in 55% of the cases, yielding to the aspirin in 4 times out of 5 and associate to a claudication in 44% of the cases. The scoliotic attitude has been found in 2 cases. We didn't notice any neurologic sign. The preoperative diagnosis has been based on the standard radiography in 44% of the cases, on the scintigraphy and the computerized tomography at the same time in 33% of the cases and the IMR in 11% of the cases. In 2 cases, the diagnosis has been based only on the anatomopathologic study. The surgical exercise was total in 78% of the cases, partial in 22% of the cases and the osseous graft was necessary in 1 case. After a mean recession of 10 months, the evolution was favorable in 67% of the cases, the pain persisted in one case associate to incomplete exercises and two patients have been lost to follow-up. The progress of modern imaging permits now a great diagnostic reliability and therapeutic approach less invasive. Indeed, the location reached the target, because the practice of the scano-assisted Percutaneous resection that has the tendency to substitute for classical surgical treatment