Risk and prognostic survival analysis of radiation-related second malignant neoplasms following radiotherapy for nasopharyngeal carcinoma: intensity-modulated radiotherapy and two-dimensional radiotherapy.
BACKGROUND AND PURPOSE To clarify the long-term risk and prognostic implications of second malignant neoplasms (SMNs) among nasopharyngeal carcinoma survivors in intensity-modulated radiotherapy (IMRT) and historical two-dimensional radiotherapy (2D-RT) cohorts. MATERIALS AND METHODS We extracted data from 8,032 and...