Angiectatic Nasal Polyp Localized in the Maxillary Sinus

DOI 34 References
  • Nota Jumpei
    Department of Otorhinolaryngology, Kosei Hospital
  • Hinohira Yasuyuki
    Department of Otorhinolaryngology-Head and neck Surgery, Ehime University School of Medicine
  • Takahashi Hirotaka
    Department of Otorhinolaryngology-Head and neck Surgery, Ehime University School of Medicine
  • Watanabe Futoshi
    Department of Otorhinolaryngology, Kosei Hospital
  • Gyo Kiyofumi
    Department of Otorhinolaryngology-Head and neck Surgery, Ehime University School of Medicine

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  • 上顎洞に限局したangiectatic nasal polypの1例

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Abstract

Angiectatic nasal polyp (ANP) is a rare entity of usually found as an inflammatory sinonasal polyp, accounting for 4 to 5% of all nasal polyps. We report a case of ANP localized in the maxillary sinus. A 66-year-old woman with choanal discharge was found to have as tumorous mass in the right maxilla. It was removed endonasally using an endoscope. A histological study proved it to be ANP.<br>ANP originates mainly from the maxillary sinus mucosa, and enlarges gradually without provoking any nasal symptoms. Clinical symptoms are similar to juvenile angiofibromas and malignant tumors, marking differential diagnosis from these diseases important.

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