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Τρίτη 2 Ιανουαρίου 2018

Genomic Analysis Reveals Distinct Subtypes in Two Rare Cases of Primary Ovarian Lymphoma

Publication date: Available online 3 January 2018
Source:Pathology - Research and Practice
Author(s): Pallavi Khattar, Puneet Bedi, Marion Gonzalez, Minghao Zhong, Changhong Yin, Weihua Huang, Humayun K. Islam, John T. Fallon
Primary (localized) non-Hodgkin lymphoma (NHL) of the ovary is extremely rare; only few cases have been reported in the literature. We report two cases of primary ovarian lymphoma (POL), one involving bilateral ovaries in a 15-year-old girl and other involving one ovary in a 5-year-old girl. This report describes detailed clinical, histopathological, and imaging findings, along with the review of literature of primary diffuse large B-cell lymphoma (DLBCL) arising from an ovary. In addition we describe findings of targeted capture panel sequencing on both tumors and identify the major genetic mutations that are recurrently mutated in pan-cancers. Compared to the genomic mutation features of major subtypes of DLBCL, we distinguish that each POL belongs to distinctive subtypes, GCB (germinal center B-cell type) DLBCL and ABC (activated B-cell type) DLBCL, respectively. The findings from the genomic analysis may help to understand the pathogenesis of POL and to guide potential targeted therapy in the future.



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