Endoscopic surgical approach of sinonasal inverted papilloma: A case report and mini review

Dayinta Grahitanindya 1, *, Ida Bagus Gede Hendra Kusuma 2, Ida Bagus Semara Putra 1, 3 and Nyoman Dian Permatasari 1, 3

1 Department of Otorhinolaryngology Head and Neck Surgery, Mangusada Regional Hospital, Badung, Bali, Indonesia.
2 Department of Otorhinolaryngology Head and Neck Surgery, Faculty of Medicine, Udayana University, Denpasar, Bali, Indonesia.
3 Departement of Otorhinolaryngology Head and Neck Surgery, Faculty of Medicine and Health Sciences, Warmadewa University, Denpasar, Bali, Indonesia.
 
GSC Advanced Research and Reviews, 2024, 18(02), 198–203.
Article DOI: 10.30574/gscarr.2024.18.2.0046
Publication history: 
Received on 25 December 2023; revised on 06 February 2024; accepted on 08 February 2024
 
Abstract: 
Sinonasal inverted papilloma (SNIP) is a relatively rare benign tumor that occurs in 0.2-1.5 per 100.000 persons each year, comprising 0.5% - 4% of all sinonasal neoplasms. Despite being benign in nature, SNIP exhibits local aggressiveness due to its distinctive proliferation of metaplastic surface epithelium that undergoes inversion into the underlying stroma. Also, it carries a risk of malignant transformation. These characteristics thus emphasize the necessity for complete surgical excision as the primary treatment.
A 50-year-old woman presented with sinonasal inverted papilloma classified as stage T2 according to Krouse staging, suitable for a less invasive endoscopic approach. However, CT scan revealed maxillary sinusitis. Adhering to SNIP management principles, a surgical excision through Endoscopic Sinus Surgery (ESS) followed by Endoscopic Modified Medial Maxillectomy (EMMM) or prelacrimal approach was chosen to provide better visualization of the anterior, lateral, posterior, inferior, and medial walls of the maxillary sinus. This approach aimed to preserve the inferior turbinate and nasolacrimal, avoiding postoperative lacrimation.
 
Keywords: 
Sinonasal Inverted Papilloma; Endoscopic approach; Endoscopic modified medial maxillectomy; Prelacrimal approach; Benign tumor 
 
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