[Diagnostic imaging and therapy of chondroblastoma].

The chondroblastoma is a rare lytic osseous lesion, which is typically to be found in the epiphyses of the long tubular bones. We present a case report with the differential diagnostic imaging and the surgical therapy of a chondroblastoma of the proximal tibial epiphysis. A 16-year-old male presented in the traumatological accident and emergency centre with knee pain of unclear origin that had been increasing for several months.