<prompt> Giant cells seen in -a Osteoclastomab Chondroblastomac Chordomad Osteitis fibrosa cysticaacabadbc  <response>: Giant cell containing lesionsBenignGCT osteoclastomaBenign fibrous histiocytomNon--ossifying fibromaChondroblastomaChondromyxoid fibromaFibrous dysplasiaMalignantGiant cell containing osteogenic sarcomaMalignant fibrous histiocytomaFibrosarcoma 