Source:http://linkedlifedata.com/resource/umls/id/C0205874
NCI: A benign epithelial neoplasm characterized by a papillary growth pattern and a proliferation of neoplastic squamous cells.,NCI: A benign epithelial neoplasm characterized by a papillary growth pattern and a proliferation of neoplastic squamous cells without morphologic evidence of malignancy. Most frequently it arises in the oral cavity, nasopharynx, larynx, esophagus, vagina, and vulva.