text: A<unk>  is a focus of compact bone located in cancellous bone.
  Benign entity that is usually found incidentally on imaging studies
  Histologically,<unk> s are intramedullary foci of normal compact bone with haversian canals and "thorny" radiations that merge with the trabeculae of surrounding normal cancellous bone.
  Most commonly identified in the pelvis, long bones, ribs, and spine.
option_0: Bone island
option_1: Skin appendage
option_2: Axial skeleton
option_3: Wound
option_4: Aura 
option_5: Capitate bone
option_6: Operon
option_7: Tissue 