Infradiaphragmatic irradiation and high procarbazine doses increase colorectal cancer risk in Hodgkin lymphoma survivors

Anna M van Eggermond, Michael Schaapveld, Cécile Pm Janus, Jan Paul de Boer, Augustinus Dg Krol, Josée M Zijlstra, Richard Wm van der Maazen, Leontien C Kremer, Monique E van Leerdam, Marieke Wj Louwman, Otto Visser, Marie L De Bruin, Berthe Mp Aleman, Flora E van Leeuwen

    15 Citations (Scopus)
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    Abstract

    Background:Hodgkin lymphoma (HL) survivors are at increased risk of second malignancies, but few studies have assessed colorectal cancer (CRC) risk after HL treatment. We assessed long-term, subsite-specific CRC risk associated with specific radiation fields and chemotherapy regimens.Methods:In a Dutch cohort of 3121 5-year HL survivors treated between 1965 and 1995, subsite-specific CRC incidence was compared with general population rates. Treatment effects were quantified by Cox regression analyses.Results:After a median follow-up of 22.9 years, 55 patients developed CRC. The standardized incidence ratios (SIR) was 2.4-fold increased (95% confidence interval (95%CI) 1.8-3.2), leading to 5.7 excess cases per 10 000 patient-years. Risk was still increased 30 years after HL treatment (SIR: 2.8; 95%CI: 1.6-4.6). The highest (SIR: 6.5, 95%CI: 3.3-11.3) was seen for transverse colon cancer (15.0 (95%CI: 4.3-40.8) after inverted-Y irradiation). A prescribed cumulative procarbazine dose >4.2 g m â '2 was associated with a 3.3-fold higher CRC risk (95%CI: 1.8-6.1) compared to treatment without procarbazine. Patients receiving >4.2 g m â '2 procarbazine and infradiaphragmatic radiotherapy had a hazard ratio of 6.8 (95%CI: 3.0-15.6) compared with patients receiving neither treatment, which is significantly higher than an additive joint effect (P additivity =0.004).Conclusions:Colorectal cancer surveillance should be considered for HL survivors who received Infradiaphragmatic radiotherapy and a high cumulative procarbazine dose.

    Original languageEnglish
    JournalB J C
    Volume117
    Issue number3
    Pages (from-to)306-314
    Number of pages9
    ISSN0007-0920
    DOIs
    Publication statusPublished - 25 Jul 2017

    Keywords

    • Adult
    • Antineoplastic Agents
    • Antineoplastic Combined Chemotherapy Protocols
    • Bleomycin
    • Colon
    • Colorectal Neoplasms
    • Diaphragm
    • Doxorubicin
    • Female
    • Follow-Up Studies
    • Hodgkin Disease
    • Humans
    • Male
    • Mechlorethamine
    • Middle Aged
    • Neoplasms, Radiation-Induced
    • Neoplasms, Second Primary
    • Netherlands
    • Prednisone
    • Procarbazine
    • Rectum
    • Risk Factors
    • Survivors
    • Vinblastine
    • Vincristine
    • Young Adult
    • Journal Article

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