Sarcoma, a heterogeneous group of connective tissue cancers, develops from mesenchymal cells, encompassing bone, muscle, blood vessels and other connective tissues. This category of rare tumours can occur in various parts of the body, with considerable diversity in morphology and biology. Sarcomas are distinguished by their origin in the cells that support, connect and surround the body's organs. As sarcomas can arise from multiple types of soft tissue and bone, their classification includes various subtypes, such as liposarcoma, leiomyosarcoma and osteosarcoma.

Their clinical behaviour can vary, some being relatively indolent while others can be aggressive and spread to other parts of the body. Because sarcoma is so rare compared with other forms of cancer, understanding it in depth remains a challenge. Advances in genetic and molecular research are contributing to a better characterisation of sarcomas. Despite their diversity, sarcomas share the common denominator of originating in soft tissue or bone, giving rise to ongoing interest in elucidating the mechanisms underlying their development and progression. 

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