<prompt> The salivary gland neoplasm which characterstically spreads perineurally along the cranial nerves isPleomorphic adenomaAcinic cell carcinomaMucoepidermoid carcinomaAdenoid cystic carcinoma  <response>: Perineural involvement is a well-recognized clinicopathologic entity found in head and neck HN cancers, including mucosal epithelial carcinomas and salivary gland malignancies,esp,adenoid cystic carcinoma31-96. 