Andreasen S, et al. - Given that biphenotypic sinonasal sarcoma (BSNS) is a recently documented type of sarcoma appearing solely in the sinonasal tract displaying unique clinical course, histopathology, and genetics, researchers present three previously unreported cases of BSNS after a comprehensive review of the literature to provide an overview of the current understanding of this disease. Due to its relatively indolent clinical course, the recognition of BSNS was crucial. The study findings suggested that a selected immunohistochemical panel and/or molecular confirmation could be used to aid in appropriate diagnosis and consequently in prognostication and to avoid overtreatment with chemotherapy regimens used in its mimics.