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      Maladie de hodgkin et cancer colique secondaire: à propos d'un cas Translated title: Hodgkin's disease and secondary colon cancer: report of a case

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          Abstract

          La maladie de HODGKIN (MDH) survient le plus souvent chez les enfants, adolescents et jeunes adultes. Elle représente une des tumeurs malignes les plus curables. Grâce aux progrès thérapeutiques actuels, plusieurs patients ont pu obtenir des réponses complètes durables, mais les tumeurs solides malignes, secondaires au traitement, demeurent la complication tardive la plus redoutable chez les longs survivants. Il s'agit d'un patient de 28 ans, sans antécédents pathologiques notables, suivi depuis l'age de 13 ans pour une MDH scléro-nodulaire stade IV (à localisation pulmonaire). Le patient a reçu initialement 06 cures de chimiothérapie, suivies d'une radiothérapie externe sus et sous-diaphragmatique. L’évolution a été marquée par la survenue de 02 rechutes, pour lesquelles, 02 autres lignes thérapeutiques ont été administrées. Puis, survenue d'une progression, pour laquelle il a été mis sous Cyclophosphamide par voie orale. Après 02 ans d'un bon contrôle clinique et radiologique sous cette dernière drogue cytotoxique, le patient a fait apparaître une hématurie macroscopique et parallèlement, un adénocarcinome (ADK) colique, survenant 15 ans après le début du traitement initial du lymphome, ayant nécessité une hémicolectomie droite élargie. Les modalités thérapeutiques de la MDH chez les adolescents et jeunes adultes ont subit des modifications remarquables ces dernières décennies. L’évaluation du risque de cancers secondaires chez les longs survivants, reflète souvent l'effet de modalités anciennes plus agressives. La plupart des études rapportant des cas de cancers secondaires, tiennent en compte la 1 ère ligne thérapeutique et les traitements de rattrapage de la MDH. En effet, les jeunes patients traités par chimiothérapie et plus particulièrement par radiothérapie, sont à haut risque de développer des cancers secondaires. La radio-chimiothérapie parait par ailleurs, augmenter de façon plus significative ce risque. L'estimation du risque de cancers secondaires à long terme demeure alors essentielle, afin de minimiser les complications tardives, et ceci à travers des mesures de prévention et de dépistage chez les jeunes patients potentiellement à risque.

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          Cancer incidence in atomic bomb survivors. Part II: Solid tumors, 1958-1987.

          This report presents, for the first time, comprehensive data on the incidence of solid cancer and risk estimates for A-bomb survivors in the extended Life Span Study (LSS-E85) cohort. Among 79,972 individuals, 8613 first primary solid cancers were diagnosed between 1958 and 1987. As part of the standard registration process of the Hiroshima and Nagasaki tumor registries, cancer cases occurring among members of the LSS-E85 cohort were identified using a computer linkage system supplemented by manual searches. Special efforts were made to ensure complete case ascertainment, data quality and data consistency in the two cities. For all sites combined, 75% of the cancers were verified histologically, 6% were diagnosed by direct observation, 8% were based on a clinical diagnosis, and 12.6% were ascertained by death certificate only. A standard set of analyses was carried out for each of the organs and organ systems considered. Depending on the cancer site, Dosimetry System 1986 (DS86) organ or kerma doses were used for computing risk estimates. Analyses were based on a general excess relative risk model (the background rate times one plus the excess relative risk). Analyses carried out for each site involved fitting the background model with no dose effect, a linear dose-response model with no effect modifiers, a linear-quadratic dose-response model with no effect modifiers, and a series of linear dose-response models that included each of the covariates (sex, age at exposure, time since exposure, attained age and city) individually as effect modifiers. Because the tumor registries ascertain cancers in the registry catchment areas only, an adjustment was made for the effects of migration. In agreement with prior LSS findings, a statistically significant excess risk for all solid cancers was demonstrated [excess relative risk at 1 Sv (ERR1Sv) = 0.63; excess absolute risk (EAR) per 10(4) person-year sievert (PY Sv) = 29.7]. For cancers of the stomach (ERR1SV = 0.32), colon (ERR1SV = 0.72), lung (ERR1SV = 0.95), breast (ERR1SV = 1.59), ovary (ERR1SV = 0.99), urinary bladder (ERR1SV = 1.02) and thyroid (ERR1SV = 1.15), significant radiation associations were observed. There was some indication of an increase in tumors of the neural tissue (excluding the brain) among persons exposed to the bombs before age 20. For the first time, radiation has been associated with liver (ERR1SV = 0.49) and nonmelanoma skin (ERR1SV = 1.0) cancer incidence in the LSS cohort. The present analysis also strengthened earlier findings, based on a smaller number of cases, of an effect of A-bomb radiation on salivary gland cancer.(ABSTRACT TRUNCATED AT 400 WORDS)
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            Risk of second malignancy after Hodgkin's disease in a collaborative British cohort: the relation to age at treatment.

            To assess long-term site-specific risks of second malignancy after Hodgkin's disease in relation to age at treatment and other factors. A cohort of 5,519 British patients with Hodgkin's disease treated during 1963 through 1993 was assembled and followed-up for second malignancy and mortality. Follow-up was 97% complete. Three hundred twenty-two second malignancies occurred. Relative risks of gastrointestinal, lung, breast, and bone and soft tissue cancers, and of leukemia, increased significantly with younger age at first treatment. Absolute excess risks and cumulative risks of solid cancers and leukemia, however, were greater at older ages than at younger ages. Gastrointestinal cancer risk was greatest after mixed-modality treatment (relative risk [RR] = 3.3; 95% confidence interval [CI], 2.1 to 4.8); lung cancer risks were significantly increased after chemotherapy (RR = 3. 3; 95% CI, 2.4 to 4.7), mixed-modality treatment (RR = 4.3; 95% CI, 2.9 to 6.2), and radiotherapy (RR = 2.9; 95% CI, 1.9 to 4.1); breast cancer risk was increased only after radiotherapy without chemotherapy (RR = 2.5; 95% CI, 1.4 to 4.0); and leukemia risk was significantly increased after chemotherapy (RR = 31.6; 95% CI, 19.7 to 47.6) and mixed-modality treatment (RR = 38.1; 95% CI, 24.6 to 55. 9). These risks were generally greater after treatment at younger ages: for patients treated at ages younger than 25 years, there were RRs of 18.7 (95% CI, 5.8 to 43.5) for gastrointestinal cancer after mixed-modality treatment, 14.4 (95% CI, 5.7 to 29.3) for breast cancer after radiotherapy, and 85.2 (95% CI, 45.3 to 145.7) for leukemia after chemotherapy (with or without radiotherapy). Age at treatment has a major effect on risk of second malignancy after Hodgkin's disease. Although absolute excess risks are greater for older patients, RRs of several important malignancies are much greater for patients who are treated when young. The increased risk of gastrointestinal cancers may relate particularly to mixed-modality treatment, and that of lung cancer to chemotherapy as well as radiotherapy; there are also well-known increased risks of breast cancer from radiotherapy and leukemia from chemotherapy. The roles of specific chemotherapeutic agents in the etiology of solid cancers after Hodgkin's disease require detailed investigation.
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              Long-term risk of second malignancy in survivors of Hodgkin's disease treated during adolescence or young adulthood.

              To quantify the long-term risk of second primary cancers (SCs) in patients diagnosed with Hodgkin's disease (HD) during adolescence or young adulthood. The risk of SCs was assessed in 1,253 patients diagnosed with HD before the age of 40 years and treated in two Dutch cancer centers between 1966 and 1986. The median follow-up duration was 14.1 years. In all, 137 patients developed SCs, compared with 19.4 cases expected on the basis of incidence rates in the general population (relative risk [RR] = 7.0; 95% confidence interval, 5.9 to 8.3). The 25-year actuarial risk of SC overall was 27.7%. The RR of solid tumors increased greatly with younger age at the first treatment of HD, not only for breast cancer but also for all other solid tumors, with RRs of 4.9, 6.9, and 12.7 for patients first treated at ages 31 to 39 years, 21 to 30 years, and
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                Author and article information

                Journal
                Pan Afr Med J
                PAMJ
                The Pan African Medical Journal
                The African Field Epidemiology Network
                1937-8688
                06 July 2011
                2011
                : 9
                : 25
                Affiliations
                [1 ]Service d'Oncologie Médicale, Institut National d'Oncologie, code postal 10100, Rabat, Maroc
                [2 ]Service de radiothérapie, Institut National d'Oncologie, code postal 10100, Rabat, Maroc
                Author notes
                [& ]Corresponding author: Lamia Boulaamane, Hôpital My Abdellah, Institut National d'Oncologie,Rabat, code postal 10100, Maroc
                Article
                PAMJ-09-25
                3215547
                22145060
                743ccc23-a840-4972-9c10-2413fbeb081e
                © Boulaamane Lamia et al.

                The Pan African Medical Journal - ISSN 1937-8688. This is an Open Access article distributed under the terms of the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 19 January 2011
                : 02 June 2011
                Categories
                Case Report

                Medicine
                maladie de hodgkin,cancers secondaires,adolescents survivants,radiothérapie,radio-chimiothérapie,chimiothérapie

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