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Difference between revisions of "Perineural invasion"
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[[Image:Prostatic adenocarcinoma with perineural invasion.JPG|thumb|right|300px|Perineural invasion in prostate carcinoma. [[H&E stain]].]] | |||
'''Perineural invasion''', also known as '''perineural tumour''', is the presence of a tumour within the nerve sheath. It is abbreviated as '''PNI'''. | '''Perineural invasion''', also known as '''perineural tumour''', is the presence of a tumour within the nerve sheath. It is abbreviated as '''PNI'''. | ||
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*Tumour within the nerve sheath. | *Tumour within the nerve sheath. | ||
DDx: | |||
*Benign perineural glands (known as ''benign perineural involvement'').<ref name=pmid16096404>{{Cite journal | last1 = Ali | first1 = TZ. | last2 = Epstein | first2 = JI. | title = Perineural involvement by benign prostatic glands on needle biopsy. | journal = Am J Surg Pathol | volume = 29 | issue = 9 | pages = 1159-63 | month = Sep | year = 2005 | doi = | PMID = 16096404 }}</ref> | |||
**Should ''not'' completely wrap around the gland. | |||
===Images=== | ===Images=== | ||
<gallery> | <gallery> | ||