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| ==Langerhans cell histiocytosis== | | ==Langerhans cell histiocytosis== |
| {{Main|Langerhans cell histiocytosis}} | | {{Main|Langerhans cell histiocytosis}} |
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| ===Microscopic===
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| Features:
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| *Langerhans cells histiocytes - '''key feature'''.
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| **Clusters of cells (histiocytes) with a reniform (kidney-shaped) nucleus and abundant foamy cytoplasm.
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| *+/-Eosinophils - often prominent.
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| See ''[[Langerhans cell histiocytosis]]'' for details.
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| ==Lymph node hyalinization== | | ==Lymph node hyalinization== |