JIBI INKOKA TEMBO
Online ISSN : 1883-6429
Print ISSN : 0386-9687
ISSN-L : 0386-9687
ORIGINAL PAPERS
BILATERAL INVERTED PAPILLOMA: TWO CASES AND A LITERATURE REVIEW
Ryoji OguroTakashi KashiwagiYurie TakiseSyota SaitoRyohei KimuraMakoto AkutsuYasuhiro TsunemiWataru KonnoHideki HirabayashiShinichi Haruna
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2021 Volume 64 Issue 3 Pages 150-156

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Abstract

 Sinonasal inverted papilloma is the most commonly occurring benign tumor of the paranasal sinuses and is generally recognized as being unilateral. It has the potential for malignant transformation and is known to be associated with a high relapse rate. Herein, we report two cases of bilateral sinonasal inverted papilloma which were diagnosed at surgery. Preoperative biopsy suggested that the nasal tumor was an inflammatory nasal polyp, but frozen section examination revealed the diagnosis of bilateral inverted papilloma. Even in cases where a diagnosis of unilateral sinonasal inverted papilloma has been made, it must be assumed that there could be a neoplastic lesion on the opposite side. Therefore, detailed intranasal observation is important. In some cases, preoperative histological diagnosis and intra-operative diagnosis are essential.

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© 2021 Society of Oto-rhino-laryngology Tokyo
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