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 ...

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 ...