Two benigne bone lesions at one tubular bone: Misinter-pretation of clinical and radiological symptoms.

Introduction: Bone lesions are common at puberty, Most of them are detected by chance at examination for other reasons, The nonossifying fibroma does not produce any clinical symptoms and normally is diagnosed by chance. A sp ontaneous healing is discussed. The osteoid osteoma is characterized by its nocturnal pain and relief of pain at therapy with salicylates. Operative p rocedures are indicated for healing, Case: A 12-year-old girl presented wit h radiological signs of a nonossifying fibroma. Because of local radionucli d uptake and clinical symptoms an operative procedure was carried out. Post operative remaining pain resulted in radiological detection of a nearby ost eoid osteoma and local operative therapy. Conclusion: Two benign bone lesio ns at one tubular bone are an extremely rare situation. The clinical sympto ms and the radionuclid uptake are misinterpretated and falsely assigned to the nonossifying fibroma. All clinical symptoms and radiological signs have to be correlate correctly with the diagnosis and consecutive therapy in or der to avoid a misinterpretation of obvious clear radiological results.