Asian Pacific Journal of Cancer Prevention

Asian Pacific Journal of Cancer Prevention (아시아태평양암예방학회)
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Type Distribution of Lymphomas in Lebanon: Five-Year Single Institution Experience

  • Sader-Ghorra, Claude (Pathology Department, Hotel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University) ;
  • Rassy, Marc (Pathology Department, Hotel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University) ;
  • Naderi, Samah (Pathology Department, Hotel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University) ;
  • Kourie, Hampig Raphael (Hematology-Oncology Department, Hotel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University) ;
  • Kattan, Joseph (Hematology-Oncology Department, Hotel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University)
  • Published : 2014.07.30
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Abstract

Background: Lymphomas represent the fifth most frequent cancer in Lebanon. However, little is known concerning epidemiologic characteristics and distribution of lymphoid neoplasms according to the 2008 WHO classification. Materials and Methods: We conducted a retrospective study of lymphoma cases diagnosed from 2008 till 2012 at $H\hat{o}tel$-Dieu de France University Hospital. Results: A total of 502 new cases of lymphoma were diagnosed at our institution during a five year period: 119 cases (24%) were Hodgkin lymphomas (HL) and 383 cases (76%) were non-Hodgkin lymphomas (NHL). HLs were equally distributed in both sexes with a mean age at diagnosis of 30 years. Among NHL, 87% (332 cases) were B cell lymphomas, 9% (34 cases) were T cell lymphomas and 4%(17 cases) were classified as precursor lymphoid neoplasms. Among B cell lymphomas, 44% (147 cases) were diffuse large B cell lymphomas (DLBCL), 20% (65 cases) follicular lymphomas and 8% (27 cases) mantle cell lymphomas. DLBCL were equally distributed in both sexes with a mean age of 58 years. Follicular lymphomas were characterized by a male predominance (57%) and a mean age of 60 years. Mantle cell lymphomas showed a pronounced male predominance (85%) with a mean age of 60 years in men and 70 years in women. Some 72% of patients having T cell lymphomas were men, with a mean age of 57 years in men and 45 years in women, while 65% of patients having precursor lymphoid neoplasms were women with a mean age of 22 years in women and 30 years in men. Conclusions: The lymphoma subtype distribution in Lebanon is unique when compared to other countries from around the world. In fact, Hodgkin and follicular lymphomas are more frequent than in most Far Eastern, European and American countries, while T-cell lymphomas and DLBCL are less frequent.

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