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Search: Organ site Search: Tumor / Syndrome
WHO Classification of Tumours
Squamous cell papilloma, NOS
Urinary system: Renal pelvis, ureter, bladder, urethra


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.