Perineural invasion (PNI) is a histopathologic diagnosis, while perineural spread (PNS) is a clinical and radiologic diagnosis. PNI in head and neck cancers is well described, and the available ...

Perineural involvement is a well-recognized clinicopathologic entity found in head and neck (H&N) cancers, including mucosal epithelial carcinomas and salivary gland malignancies. Perineural ...

In that case, the biopsy will show that there's perineural invasion. "Perineural invasion means that cancer cells have been found surrounding or tracking along the nerves within the prostate ...

Continuous perineural analgesia is the placement of a small tube (catheter) around a nerve or group of nerves in order to provide you relief from pain after surgery of your arm or leg. The tube will ...