Osteoid Osteoma

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OSTEOID osteoma is a most interesting and unusual lesion of bone. Although relatively uncommon, this lesion must always be considered as a possible cause of pain in the extremities or in the backs of patients between the ages of 10 and 30 years. The disease occurs most frequently in the second decade of life and is encountered twice as often in males as in females. Since the clinical signs and the clinical course of an osteoid osteoma are unique, being unlike those of any other lesion of bone, a diagnosis of the condition can often be made even without histologic verification.

Osteoid osteoma was first described as a clinical entity by Jaffe1 in 1935. However, five years earlier in 1930, Bergstrand2 published a detailed summary of two cases of a rare benign osteoblastic lesion — one in a metatarsal and one in the phalanx of a finger. Preoperatively, Bergstrand had believed that these lesions were osteogenic sarcomas, but, after examining the involved areas of the resected bones, he concluded that the lesions were neither inflammatory nor neoplastic but probably were due to embryonal rests. These two cases of Bergstrand’s were osteoid osteomas, but Jaffe receives the credit for initially describing the clinical and pathologic features of this most unusual lesion.

Jaffe applied the term “osteoid osteoma” to this lesion of bone because he believed it to be a true, benign, osteoblastic tumor consisting of osteoid and atypical bone. The exact nature of osteoid osteomas is still a matter of debate among . . .



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