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6 Cards in this Set
- Front
- Back
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normal lymph node histology |
B cells in follicles (in cortex); T cells in the inter follicular space (paracortex); medulla in center; sinusoids draining the whole thing |
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acute non specific lymphadenitis |
lymph nodes are swollen and TENDER TO THE TOUCH; SHORT HISTORY; macrophages containing particulate debris and NEUTROPHILS (neutrophils a big sign); this is due to infection not neoplasm |
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chronic nonspecific lymphagenitis |
NON TENDER; long term; either follicular hyperplasia, paracortical hyperplasia, or sinus histocytosis |
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follicular hyperplasia |
lots of follicles; could be due to rheumatoid arthritis, toxoplasmosis, and early stages of HIV; this form can be confused with follicular lymphomas so there are stains that differentiate the two |
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paracortical hyperplasia |
expansion of the T cell regions of the lymph node (para follicular space or paracortex); inter follicular area is expanded are there are very few follicles; reactions to drugs, acute viral infections, mono, vaccines (he didn't say any of these reasons for the reaction) |
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sinus histiocytosis |
distention and prominence of the lymphatic sinusoids; can be due to lymph nodes that are draining cancers |
