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Difference between revisions of "Papillary"
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In [[pathology]], '''papillary''' refers to a nipple-like projection with a fibrovascular core. | In [[pathology]], '''papillary''' refers to a nipple-like projection with a fibrovascular core. | ||
''Papillary pattern'' | ''Papillary pattern'' redirects here. | ||
==General== | ==General== | ||
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==Microscopy== | ==Microscopy== | ||
Histologic definition - papilla: | Histologic definition - papilla: | ||
*Nipple-shaped structure | *Nipple-shaped structure consisting of epithelium on a fibrovascular core. | ||
**''Fibrovascular core'' = fibrous tissue + least one blood vessel. | |||
Note: | Note: | ||
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DDx: | DDx: | ||
*Micropapilla - nipple-shaped structure without blood vessels. | *Micropapilla - nipple-shaped structure without blood vessels; usually smaller than papillae. | ||
*Pseudopapilla - cells distant from the blood vessels undergo [[necrosis]] imparting a papillary-like appearance, e.g. [[solid pseudopapillary tumour]]. | *Pseudopapilla - cells distant from the blood vessels undergo [[necrosis]] imparting a papillary-like appearance, e.g. [[solid pseudopapillary tumour]]. | ||