Gumprecht shadows: When to use this terminology?

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The expression Gumprecht shadows historically refers to lymphocyte lysates commonly observed in patients with chronic lymphocytic leukemia (CLL). A literature review revealed that this term is restricted to CLL cases, and should not be applied to lymphocytosis-related conditions. Inappropriate use of this term can cause great anxiety in individuals receiving their blood count results, as well as in their families. In a web search engine commonly used to clear doubts on medical terms, there are countless pages where Gumprecht shadows are associated with CLL.




Dusse, L. M. S. ana, Silva, T. P., Freitas, L. G., Vieira, L. M., De Paula Sabino, A., & Carvalho, M. D. G. (2013). Gumprecht shadows: When to use this terminology? Jornal Brasileiro de Patologia e Medicina Laboratorial, 49(5), 320–323.

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