[Malignant lymphoma of the bone in children (author's transl)]

Two children with primary malignant lymphoma of the bone and the progress of the disease are presented. There was a delayed diagnosis in both children. The tumors were first misinterpreted as being benign (epipiphysiolysis capitis femoris atheroma) and later on as being malignant (Ewing's sarcoma neuroblastoma). The course of the disease in one child (leukemia transformation) confirmed finally the diagnosis of malignant lymphoma.