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9 Cards in this Set
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- Back
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What are reasons to aspirate lymph nodes?
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due to enlargement or if you suspect metastasis
normal size lymph nodes are usually normal |
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What are the four causes of lymphadenopathy?
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-hyperplasia/reactive
-lymphadenitis -metastatic neoplasia -Primary neoplasia (lymphoma) |
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What are the three types of lymphadenitis?
What are the predominant cells in each type? |
Suppurative - neutrophils
Mixed - neutrophils and macrophages Mononuclear -macrophages or granulomatous |
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What is the predominant cell type in a lymph node that is hyperplastic? How about in metastatic neoplasia? Primary Neoplasia?
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- plasma cells (antigenic stimulation) can also see lymphocytes
-clumps of neoplastic cells, mast epithelial and mesenchymal cells -greater than 50% lymphoblasts |
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What is the predominant cell in a normal lymph node?
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small lymphocytes
cells have deep blue cytoplasm and prominent golgi |
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What diseases do you see microorganisms in the lymph nodes?
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strangles in horses
cats with plague |
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T/F
cytology as accurate as histology in predicting presence or absence of metastasis |
true
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What are possible problems with making lymph node aspirates?
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-missed the lymph node (get fat or salivary gland)
-slide isn't stained enough -unable to find etiology (uncommon) |
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What is a sign of a small cell variant lymphoma?
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cytoplasmic pseudopodia
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