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| ==Granular cell tumour== | | ==Granular cell tumour== |
| ===General===
| | {{Main|Granular cell tumour}} |
| *Rare.
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| *Usually benign.
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| ===Microscopic=== | | ===Microscopic=== |
| Features: | | Features: |
| *Abundant eosinophilic granular cytoplasm. | | *Abundant eosinophilic granular cytoplasm. |
| | | **Granules 1-3 micrometers in size. |
| ===Special stains===
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| *PAS +ve. | |
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| ===IHC===
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| Features:<ref name=pmid20471560>{{Cite journal | last1 = Rekhi | first1 = B. | last2 = Jambhekar | first2 = NA. | title = Morphologic spectrum, immunohistochemical analysis, and clinical features of a series of granular cell tumors of soft tissues: a study from a tertiary referral cancer center. | journal = Ann Diagn Pathol | volume = 14 | issue = 3 | pages = 162-7 | month = Jun | year = 2010 | doi = 10.1016/j.anndiagpath.2010.01.005 | PMID = 20471560 }}</ref>
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| *S100 +ve.
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| *CD68 +ve (cytoplasmic).
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| *Vimentin +ve (membranous).
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| Images: | | Images: |