Inverted papilloma is an uncommon yet well-described and recognized nasal tumor that was probably first described by Billroth in 1855 as a "" Villiform Cancer"". The pathologic characteristics is numerous prominent invagination of the epithelium into the stroma and the overlying epithelium may be respiratory, squamous, or transitional. Recurrence after excision is frequent, and a sufficient number of cases have been reported in which the lesion coexisted with or preceded carcinoma to alert physicians to this serious complications. Recently, the authors experienced a case of inverted papilloma with squamous cell carcinoma. The patient, 38 years old woman, was admitted through OPD with nasal obstruction, protruded mass in the left nasal cavity and inner canthus with easy contact bleeding on April 20, 1974. The biopsy report revealed inverting papilloma with questionable squamous cell carcinoma of the nose and P.N.S. Therefore, radical resection of the tumor mass was done through the lateral rhinotomy incision. About 3 months later, the papillary mass was recurred in the ethmoid area and rebiopsy report revealed the same result. Repeated extensive surgery and Co⁶⁰ irradiation was recommended. But the patient refused the surgery and died 10 months later.