["Adamantinoma" of the tibia and reactive bone changes (author's transl)]

A case of "adamantinoma" of the tibia is reported. 10 years ago a giant tumor with fibrous dysplasia had been diagnosed in a biopsy taken from the same site of cystic bone changes. These findings may occur as reaction in the periphery of "adamantinomas" of long bones. By this experience the importance was emphasized, to obtain tissue from the center portion of the tumor to include the typical epithelial islets pathognomonic for "adamantinomas", which in our case, were found only 10 years after the first operation. Our patient was treated by curetting and filling of the defect with bony splinters. At this time, 8 months after surgery, he is without complaints and in full use of his diseased leg.