Wielding a double-edged sword in head and neck cancers—diagnosis, risk factors and mitigation strategies of radiation-induced head and neck sarcomas: a narrative review

National University Cancer Institute, Singapore, Singapore; Novi High School, Novi, MI, USA Contributions: (I) Conception and design: TY Chan, B Vellayappan; (II) Administrative support: All authors; (III) Provision of study materials or patients: TY Chan, B Vellayappan; (IV) Collection and assembly of data: TY Chan, B Vellayappan; (V) Data analysis and interpretation: TY Chan, B Vellayappan; (VI) Manuscript writing: All authors; (VII) Final approval of manuscript: All authors. Correspondence to: Balamurugan Vellayappan. 1E Kent Ridge Road, Level 7 Tower Block, Singapore 119228, Singapore. Email: bala_vellayappan@nuhs.edu.sg.