[Behavior of adamantinoma of the long bones based on long-term follow up studies].

Authors report on the long time (in average 12 years, range: 5-36 years) follow-up results of 5 cases of adamantinoma, localized on the tibia. In one case recurrence was found very late, 20 and 36 years after the primary wide resection, and resection was repeatedly performed. Because of problems of differential diagnosis in one case the tumor was excised intralesionally (curettage + plasty with cancellous bone). 7 years later the persistence of the process was found only. 1 patient died in consequence of pulmonary metastasis 9 years after the primary operation. Wide resection is suggested both for the removal of the primary tumor and the recurrences, appearing very late. For the reconstruction of the bone autologous fibula is proposed. Adamantinoma is thought to be a low malignity tumor, the outcome of which cannot be predicted from the clinical and histological findings. Considering the late recurrences and metastasis a long range, minimally 10 years, following of the patient is thought to be necessary.