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PT  - JOURNAL ARTICLE
AU  - Ghofrani, M.
AU  - Tantiwongkosi, B.
AU  - Smith, A.S.
AU  - Wasdahl, D.A.
TI  - Richter Transformation of Chronic Lymphocytic Leukemia Presenting as a Dural-Based Non-Hodgkin Lymphoma Mass
DP  - 2007 Feb 01
TA  - American Journal of Neuroradiology
PG  - 318--320
VI  - 28
IP  - 2
4099  - http://www.ajnr.org/content/28/2/318.short
4100  - http://www.ajnr.org/content/28/2/318.full
SO  - Am. J. Neuroradiol.2007 Feb 01; 28
AB  - SUMMARY: Richter transformation is defined as a diffuse large cell lymphoma, occurring by transformation of chronic lymphocytic leukemia (CLL). We present a 64-year-old man with a history of CLL and a left parieto-occipital transtentorial extra-axial mass. The patient underwent CT and MR imaging, demonstrating a large dural-based mass with extracranial extension, which occluded the left transverse sinus. Biopsy of the mass proved a pathologic diagnosis of diffuse large cell non-Hodgkin lymphoma, consistent with Richter transformation of CLL.