According to the Enneking system, not true regarding an active benign tumour is -: (A) Intracapsular, (B) Margin of reactive bone, (C) Thick rim of reactive bone, (D) Extended curettage is treatment
Answer is C. Enneking active stage of benign tumors is stage 2 in which tumor is actively growing and can cause symptoms of pathological fracture.
Radiograph shows well defined margins with a thin rim of reactive bone. Tumor may expand and thin the cortex.
Treatment usually consists of extended curettage, e.g. in ABC.