{Reference Type}: Case Reports {Title}: Giant cell-rich osteosarcoma - A rare case. {Author}: Mallick A;Shah N;Mahmud SA;Das SK; {Journal}: J Oral Maxillofac Pathol {Volume}: 24 {Issue}: 0 {Year}: Feb 2020 暂无{DOI}: 10.4103/jomfp.JOMFP_251_19 {Abstract}: Giant cell-rich osteosarcoma (GCRO) is an exceedingly rare histological variant of conventional primary osteosarcoma. It constitutes about 1%-3% of all osteosarcomas, and is extremely uncommon in the maxillofacial region. The unusual histopathological appearance and the rarity of the lesion poses a great diagnostic challenge. This article aims to present a rare case of GCRO involving the mandible in a 52-year-old male patient.