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See: [http://www.nature.com/modpathol/journal/v15/n3/pdf/3880520a.pdf http://www.nature.com/modpathol/journal/v15/n3/pdf/3880520a.pdf] | See: [http://www.nature.com/modpathol/journal/v15/n3/pdf/3880520a.pdf http://www.nature.com/modpathol/journal/v15/n3/pdf/3880520a.pdf] | ||
===Squamous metaplasia=== | ===Squamous metaplasia of the uterine cervix=== | ||
====General==== | |||
*Benign process: columnar cells -> squamoid cells. | |||
**Biologic response to irritation and/or inflammation. | |||
====Microscopic==== | |||
Features: | |||
* Nuclei are uniform size and round. | * Nuclei are uniform size and round. | ||
* Intercellular bridges | ** Nucleoli present. | ||
* Uniform cell spacing, i.e. | * +/-Intercellular bridges (due to edema) - common. | ||
* Uniform cell spacing, i.e. no crowding. | |||
Negatives: | |||
* No mitoses (think cancer/CIN if you see 'em). | |||
* Usually no hyperchromatism (think cancer/CIN if you see it). | |||
Notes: | Notes: | ||
* | *NC ratio high - possible to confuse CIN III. | ||
DDx: | |||
*[[CIN III]]. | |||
*[[Squamous cell carcinoma of the uterine cervix]]. | |||
===IHC=== | ===IHC=== |
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