Abstract
Many studies have investigated treatment-related sequelae in Hodgkin's lymphoma (HL) in high-prevalence areas, but very few have been conducted in low-prevalence areas, including Taiwan and Japan. We retrospectively reviewed 101 HL patients who had received mediastinal radiotherapy between January 1997 and April 2013. Nine patients had cardiac events and nine patients developed second malignancies. Univariate analysis showed that bulkiness of disease was significantly associated with higher incidence of cardiac events (HR 7.70, 95% CI 1.60-38.00, p = 0.012). Disease stage and cumulative dose of radiotherapy were significantly correlated with incidence of radiation pneumonitis (HR 1.40, 95% CI 1.00-2.10, p = 0.043 and HR 1.10, 95% CI 1.00-1.20, p = 0.009, respectively). All cases of grade III-IV radiation pneumonitis happened in patients receiving a radiation dose higher than 35Gy and developed within 4 months after radiotherapy. Despite the similar incidence rates of treatment-related sequelae among HL survivors between areas with high and low prevalence of HL, cardiac events and second malignancies cannot be overlooked in HL survivors in low-prevalence areas.
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