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The aim of this study was to determine the incidence and characteristics of second primary malignancy (SPM) in patients with head and neck squamous cell carcinoma treated at a tertiary care hospital.

journal of the korean association of oral and maxillofacial surgeons/journal of the korean association of oral and maxillofacial surgeon/daehan gu'gang ag'anmyeon oe'gwa haghoeji

Metachronous second primary malignancy in head and neck cancer patients: is five years of follow-up sufficient?