Background: The present study aimed at examining the lymphomas in Iran.
Methods: This study was conducted in 1994 on patients' specimens who were referred to our centers during 1981-1994. Using the histochemical methods, the immunohistochemical markers were used to examine the biopsied specimens of 434 patients with non-Hodgkin's and Hodgkin's lymphomas. The patients were classified according to the updated Kiel and Rye classifications, respectively.
Results: Out of the 385 cases that were diagnosed as lymphoma, 277 had non-Hodgkin's and 108 had Hodgkin's lymphomas. Sixty-four point five percent of those with non-Hodgkin's lymphoma had the B type disease; 7.5% had the T-type; and the remaining 28% had Hodgkin's lymphoma. In the present study, most (48%) patients with Hodgkin's lymphoma had mixed cellularity whereas in western countries the most common type is reported to be nodular sclerosis (69.4%).
Conclusion: The comparison made between the findings of this study and those of western countries indicates that high-grade non-Hodgkin's lymphomas are more prevalent in Iran.
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