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Nemoto, K. et al.

Nemoto, Takai, Ogawa, Sakayauchi, Sugawara, Jingu, Wada, Takai, Yamada,

Salvage radiation therapy for residual superficial esophageal cancer after endoscopic mucosal resection.

PURPOSE: To analyze the outcomes of radiation therapy for patients with residual superficial esophageal cancer (rSEC) after endoscopic mucosal resection (EMR). METHODS AND MATERIALS: From May 1996 to October 2002, a total of 30 rSEC patients without lymph node metastasis received radiation therapy at Tohoku University Hospital and associated hospitals. The time interval from EMR to start of radiation therapy ranged from 9 to 73 days (median interval, 40 days). Radiation doses ranged from 60 Gy to 70 Gy (mean dose, 66 Gy). Chemotherapy was used in 9 of 30 patients (30%). RESULTS: The 2-year, 3-year, and 5-year overall survival rates and cause-specific survival rates were 91%, 82%, and 51%, respectively, and 95%, 85%, and 73%, respectively. The 2-year, 3-year, and 5-year local control rates for mucosal cancer were 91%, 91%, and 91%, respectively, and those for submucosal cancer were 89%, 89%, and 47%, respectively. These differences in survival rates for patients with two types of cancer were not statistically significant. Local recurrence and lymph node recurrence were more frequent in patients with submucosal cancer than in patients with mucosal cancer (p = 0.38 and p = 0.08, respectively). Esophageal stenosis that required balloon dilatation developed in 3 of the 30 patients, and radiation pneumonitis that required steroid therapy developed in 1 patient. CONCLUSIONS: Radiation therapy is useful for preventing local recurrence after incomplete EMR.[1]

References

Salvage radiation therapy for residual superficial esophageal cancer after endoscopic mucosal resection. Nemoto, K., Takai, K., Ogawa, Y., Sakayauchi, T., Sugawara, T., Jingu, K., Wada, H., Takai, Y., Yamada, S. Int. J. Radiat. Oncol. Biol. Phys. (2005) [Pubmed]

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