squamous papilloma (MONDO_0001825) is 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. Also known as: epidermoid cell papilloma, epidermoid papilloma, keratotic papilloma, papilloma, squamous cell, benign, squamous cell papilloma, squamous cell papilloma (morphologic abnormality).