Evaluation of Clinical Features of Antrochoanal Polyps

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  • Asaka Daiya
    Department of Otorhinolaryngology, Jikei University School of Medicine
  • Yoshikawa Mamoru
    Department of Otorhinolaryngology, Jikei University School of Medicine
  • Nakayama Tsuguhisa
    Department of Otorhinolaryngology, Jikei University School of Medicine
  • Yoshida Takuto
    Department of Otorhinolaryngology, Jikei University School of Medicine
  • Yoshimura Tsuyoshi
    Department of Otorhinolaryngology, Jikei University School of Medicine
  • Iimura Jiro
    Department of Otorhinolaryngology, Ota General Hospital
  • Okushi Tetsushi
    Department of Otorhinolaryngology, Jikei University School of Medicine
  • Matsuwaki Yoshinori
    Department of Otorhinolaryngology, Jikei University School of Medicine
  • Iida Makoto
    Department of Otorhinolaryngology, Jikei University School of Medicine
  • Yanagi Kiyoshi
    Department of Otorhinolaryngology, St. Luke's International Hospital
  • Otori Nobuyoshi
    Department of Otorhinolaryngology, Jikei University School of Medicine
  • Moriyama Hiroshi
    Department of Otorhinolaryngology, Jikei University School of Medicine

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Other Title
  • 上顎洞性後鼻孔ポリープの臨床的検討
  • ウワアゴドウセイ コウビコウ ポリープ ノ リンショウテキ ケントウ

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Current knowledge on the prevalence and clinical features of antrochoanal polyps (ACPs), benign lesions arising in the maxillary sinus and extending into the choana, is very limited in Japan. We prospectively evaluated prevalence and clinical features in 15 subjects with ACPs from among 728 undergoing endoscopic endonasal sinus surgery between April 2007 and March 2008, and prospectively enrolled in this study. The 15 subjects, who accounted for 2.1% of the total, had nasal obstruction, rhinorrhea, and postnasal drip. Symptoms significantly reduced postoperatively. Maxillary-sinus-origin ACP distribution was 40% from the maxillary sinus floor to the posterior wall, 26.7% from maxillary sinus floor, and 20% from the maxillary sinus floor to the internal wall. Postoperative recurrence was 13.3%. Endoscopic endonasal sinus surgery for ACPs was most effective for polyp is originating in the maxillary sinus determined carefully and excised as completely as possible, followed by appropriate postoperative treatment.

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