Difference between revisions of "Perineural invasion"
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*Tumour within the nerve sheath. | *Tumour within the nerve sheath. | ||
Images | ===Images=== | ||
<gallery> | |||
Image:Prostatic_adenocarcinoma_with_perineural_invasion.JPG | Prostate adenocarcinoma with PNI - obvious (WC/Nephron) | |||
Image:Perineural_invasion_prostate_high_mag.jpg | Prostate adenocarcinoma with PNI (WC/Nephron) | |||
</gallery> | |||
==See also== | ==See also== | ||
Revision as of 23:52, 31 May 2013
Perineural invasion, also known as perineural tumour, is the presence of a tumour within the nerve sheath. It is abbreviated as PNI.
Generally, it is an indicator of a poor prognosis.
Specific tumours
| Tumour | Prognosis | Comment |
|---|---|---|
| Colorectal carcinoma | independent predictor[1] |
Microscopic
Features:
- Tumour within the nerve sheath.
Images
Prostate adenocarcinoma with PNI - obvious (WC/Nephron)
Prostate adenocarcinoma with PNI (WC/Nephron)
See also
References
- ↑ Liebig, C.; Ayala, G.; Wilks, J.; Verstovsek, G.; Liu, H.; Agarwal, N.; Berger, DH.; Albo, D. (Nov 2009). "Perineural invasion is an independent predictor of outcome in colorectal cancer.". J Clin Oncol 27 (31): 5131-7. doi:10.1200/JCO.2009.22.4949. PMID 19738119.