Non‐Hodgkin's lymphomas in Thailand: A retrospective pathologic and clinical analysis of 1391 cases

Intragumtornchai, Tanin; Wannakrairoj, Pongsak; Chaimongkol, Boonsom; Bhoopat, Lertlakana; Lekhakula, Arnuparp; Thamprasit, T; Suwanwela, Nipha; Suthipinthawong, Chipsumol; Prayoonwiwat, Wichai; Meekungwal, Preecha; Pairojkul, Chaowarit

doi:10.1002/(sici)1097-0142(19961015)78:8<1813::aid-cncr24>3.3.co;2-a

Cited by 5 publications

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“…Although the rate of occurrence of follicular lymphoma has been found to be lower in Asia (6–8%), 6,13–15 a relatively high rate (19%) similar to that of Western countries (11–30%) 13 was found in the present study and a similar result has been reported previously 16 . We suggest the following reasons for the relatively high rate of occurrence of follicular lymphomas.…”

Section: Discussionsupporting

confidence: 85%

Distribution of malignant lymphoma in Japan: Analysis of 2260 cases, 2001–2006

Aoki

Karube

Sugita

et al. 2008

Pathology International

142

114

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The World Health Organization classification was used to conduct an analysis of geographic, age, sex, and lesion primarily biopsied/resected distribution of 2260 lymphoid neoplasms diagnosed during 2001-2006 throughout Japan. B-cell neoplasms accounted for 65% of all lymphoid neoplasms, T/natural killer (T/NK)-cell neoplasms for 25% and Hodgkin lymphoma for 7%. The most common type was diffuse large B-cell lymphoma (DLBCL, 33%), followed by follicular lymphoma (18%), and adult T-cell leukemia/lymphoma (ATLL, 10%). The high rate of 18% for follicular lymphoma was similar to that in Western countries (11-33%). T/NK-cell neoplasms accounted for a higher percentage of lymphoid neoplasms in Kyushu (30%) and Okinawa (38%) compared with other areas of Japan (18-20%). Among T/NK-cell neoplasms, ATLL was the most common type in Okinawa (54%) and Kyushu (59%). Extranodal NK/T cell lymphoma was the second most common type of T/NK-cell neoplasms in Okinawa (15%). This epidemiological study shows that the distribution patterns of malignant lymphoma differ especially in Kyushu and Okinawa, the endemic area of human T-cell leukemia/lymphoma virus type 1.

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Section: Discussionsupporting

confidence: 85%

Distribution of malignant lymphoma in Japan: Analysis of 2260 cases, 2001–2006

Aoki

Karube

Sugita

et al. 2008

Pathology International

142

114

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“…[8,21,[30][31][32] Figures of 3.8% and 3% were also reported from the Asian countries of Thailand and Pakistan, respectively. [8,33] Such geographical variation in FL has long been recognized, and it has been suggested that there are different molecular pathways in ML development in different geographical areas. [34] The latter was inferred by the significantly lower incidence of bcl2 gene rearrangements, the hallmark of FL, in Asian compared to Western countries.…”

Section: Discussionmentioning

confidence: 99%

Malignant lymphoma in northern Iraq: A retrospective analysis of 270 cases according to the World Health Organization classification

et al. 2011

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Among NHL, the high frequencies of DLBCL, extra nodal primaries and intestinal BL, and the infrequency of FL in northern Iraq, is similar to reports from nearby countries but differs considerably from the West and Far East, indicating a shared regional Middle East influence on non-Hodgkin lymphoma patterns. In contrast to earlier Iraqi and regional studies on HL, NS has surpassed MC as the most frequent histological subtype in Northern Iraq. This trend probably reflects the increasing urbanization that has taken place in this region.

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“…7 Lower rates of follicular lymphoma have also been reported in other Asian countries: Korea (5.88%), 8 Hong Kong (8%), 7,16 and Thailand (3.8–11.1%). 9,31 Notably, the incidence of follicular lymphoma in mainland Europe (11%–18%) is substantially less than that in North America, London and Capetown, although the reasons for these differences are unknown. 7…”

Section: Discussionmentioning

confidence: 99%

“…A recent retrospective study of the REAL classification addressed issues of the relative frequency of the subtypes of malignant lymphoma. 5–12 Special attention was focused on geographic differences, 5–34 which may be attributable to the differences in etiologic or host factors, and it gave new insight into the further understanding of lymphocytic disorders. The objective of the present study was to examine the distribution of the subtypes of malignant lymphomas in 3194 Japanese patients diagnosed according to the WHO classification.…”

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confidence: 99%

The World Health Organization classification of malignant lymphomas in Japan: Incidence of recently recognized entities

Fujita

Yamashiro

Ichinohasama

et al. 2000

Pathology International

352

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New insights into the immunology and genetics of malignant lymphomas have allowed the recognition of new entities and the refinement of previously recognized disease categories. The relative incidence of these subtypes of malignant lymphoma is also known to differ according to geographic location. In order to clarify the current status of malignant lymphomas in Japan and the relative incidences of their subtypes, 3194 patients were classified according to the new World Health Organization (WHO) classification. Among these were 3025 cases (94.71%) of non‐Hodgkin's lymphoma (2189 cases (68.53%) of B‐cell lymphoma, 796 cases (24.92%) of T‐cell lymphoma) and 141 cases (4.41%) of Hodgkin's lymphoma. The incidences of the major subtypes of non‐Hodgkin's lymphoma were 33.34% for diffuse large B‐cell lymphoma, 8.45% for marginal zone B‐cell lymphoma of mucosa‐associated lymphoid tissue (MALT) type, 8.05% for plasma cell myeloma, 7.45% for adult T‐cell leukemia/lymphoma (ATLL), 6.7% for follicular lymphoma, 6.67% for peripheral T‐cell lymphoma of unspecified type, 2.79% for mantle cell lymphoma, 2.6% for nasal and nasal‐type T/NK cell lymphoma, 2.35% for angioimmunoblastic T‐cell lymphoma, and 2.35% for precursor B‐cell lymphoblastic leukemia/lymphoma, in decreasing order. The other subtypes comprised less than 2%, mainly precursor T‐cell lymphoblastic lymphoma/leukemia (1.72%), anaplastic large‐cell lymphoma of T‐ and null‐cell types (1.53%), and B‐cell chronic lymphocytic leukemia/small lymphocytic lymphoma (1.31%). The incidence of ATLL was influenced by its high percentage (19.20%) in the south‐western Japanese island, Kyushu, an endemic area of human T‐cell leukemia virus type 1 (HTLV‐1), but which appeared to be lower than that in a previous study. The nodular sclerosis and mixed cellularity types of Hodgkin's disease occupied 1.78% and 1.63%, respectively. These data are distinct from those in Western countries and similar in several ways to those in the East, although the relatively high rate of ATLL was attributed to the geographical difference in the etiologic factor, HTLV‐1.

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Non‐Hodgkin's lymphomas in Thailand: A retrospective pathologic and clinical analysis of 1391 cases

Cited by 5 publications

References 0 publications

Distribution of malignant lymphoma in Japan: Analysis of 2260 cases, 2001–2006

Distribution of malignant lymphoma in Japan: Analysis of 2260 cases, 2001–2006

Malignant lymphoma in northern Iraq: A retrospective analysis of 270 cases according to the World Health Organization classification

The World Health Organization classification of malignant lymphomas in Japan: Incidence of recently recognized entities

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