Radiotherapy as administered from the 1980s onward is associated with an increased risk of cardiovascular disease. Irradiated breast cancer patients should be advised to refrain from smoking to reduce their risk for cardiovascular disease.

We assessed cardiovascular disease (CVD) incidence in 1474 survivors of Hodgkin lymphoma (HL) younger than 41 years at treatment . Multivariable Cox regression and competing risk analyses were used to quantify treatment effects on CVD risk. After a median follow-up of 18.7 years, risks of myocardial infarction (MI) and congestive heart failure (CHF) were strongly increased compared with the general population (standardized incidence ratios [SIRs] ‫؍‬ 3.6 and 4.9, respectively), resulting in 35.7 excess cases of MI and 25.6 excess cases of CHF per 10 000 patients/year. SIRs of all CVDs combined remained increased for at least 25 years and were more strongly elevated in younger patients. Mediastinal radiotherapy significantly increased the risks of MI, angina pectoris, CHF, and valvular disorders (2-to 7-fold). Anthracyclines significantly added to the elevated risks of CHF and valvular disorders from mediastinal RT (hazard ratios [HRs] were 2.81 and 2.10, respectively). The 25-year cumulative incidence of CHF after mediastinal radiotherapy and anthracyclines in competing risk analyses was 7.9%. In conclu IntroductionOver the past decades, survival of patients treated for Hodgkin lymphoma (HL) has improved dramatically, as a result of the development of multiagent chemotherapy (CT), more accurate radiotherapy (RT), and enhanced possibilities to reduce treatment complications. 1 Unfortunately, the improved prognosis of HL has been accompanied by long-term toxicity, such as elevated risks of second primary malignancies, 2-9 cardiovascular disease (CVD), 2,3,[8][9][10] and infections. 2,8,9 Increased mortality of cardiac disease after mediastinal radiotherapy for HL has been reported in several studies. 2,3,[8][9][10] Dose-dependent anthracycline-induced cardiotoxicity has been observed in survivors of malignancies other than HL, who were usually treated with higher anthracycline doses. 11,12 It is not known, therefore, whether anthracyclines add to the increased risk of CVD from mediastinal RT for survivors of HL. This is an important clinical question because most patients with HL now receive anthracycline-containing chemotherapy. Although a few studies reported on nonfatal cardiac events, comparisons with the general population were usually not made, because in most countries CVD incidence rates are not available. [13][14][15][16][17][18] The purpose of our study was to assess the long-term risk of various CVDs in a cohort of 1474 five-year survivors of HL treated between 1965 and 1995.Unique features of this study include long and near complete follow-up and the availability of complete treatment data, including radiation fields and chemotherapeutic agents. In addition, we compared the incidence of various CVDs with population-based reference rates from the general population, we accounted for competing risk of death from any cause, and we incorporated cardiac risk factors in the analyses. Patients and methods Data collection proceduresWe included all 5-year survivors of HL diagnosed before age 41 years (n ϭ 148...

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Reduction of radiation volume appears to decrease the risk for BC after HL. In addition, shorter duration of intact ovarian function after irradiation is associated with a significant reduction of the risk for BC.