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Copyright of Turkish Journal of Dermatology / Turk Dermatoloji Dergisis is the property of Galenos Yayinevi Tic. LTD. STI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Turkish Journal of Hematology is the property of Galenos Yayinevi Tic. LTD. STI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Purpose: Monoclonality in the peripheral blood can be shown by flow cytometric analysis of kappa (κ) and lambda (λ) light chain ratio of B lymphocytes. We aimed to show the utility of this method in patients with unknown causes of lymphadenopathy and/or splenomegaly., Methods: This method was performed in 81 adult patients with undefined causes of lymphadenopathy and splenomegaly., Results: 18 (22%) of these patients had clonality and all of them were diagnosed as B cell lymphoma later. None of the patients with benign causes had clonality in the peripheral blood. We could not find any relationship between presence of clonality and type and stage of lymphoma and bone marrow involvement., Conclusion: This method is easy to perform, cheap and non-invasive and yet it can give valuable information about the malignant nature of a suspected disease. If there is a sign of clonality in the peripheral blood, more invasive diagnostic procedures should be performed rather than watch and wait.