... hospital visit, admis-sion, or death, and each event-free survival was calcu-lated from the date of the cancer operation to the date ofdiagnosis of each event. The five-year disease-free sur-vival ... 66:157 0-1 579.18. Lee N, Xia P, Fischbein NJ, Akazawa P, Akazawa C, Quivey JM: Intensity-modulated radiation therapy for head-and-neck cancer: the UCSF experience focusing on target volume delineation. ... high-risk features of head and neck cancer [4,5]. As with other head and neck cancers, postoperative radiation therapy (PORT) in oral tongue squamous cellcarcinoma (OSCC) is recommended for patients...