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Lymph nodes - not lymphoma
Inflammatory disorders (non-infectious)
Rheumatoid arthritis

Reviewer: William D. DePond, M.D. (see Reviewers page)
Revised: 28 July 2013, last major update June 2006
Copyright: (c) 2003-2013, PathologyOutlines.com, Inc.

General
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Micro description
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Micro images
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Reactive lymphadenopathy of rheumatoid arthritis

Follicular hyperplasia with eosinophilic material in interfollicular areas

Extensive replacement by focally calcified eosinophilic material

Rounded, well separated follicles with expanded paracortex

Follicular center composed primarily of centrocytes, with no/rare tingible body macrophages or mitotic figures

Interdigitating dendritic cells (CD1+) are associated with small lymphocytes

Negative stains
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End of Lymph nodes - not lymphoma > Inflammatory disorders (non-infectious) > Rheumatoid arthritis


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