A Case of Pediatric Inverted Papilloma Coexisting with Inflammatory Polyp
Sari, Maesyara Adinda
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Inverted papilloma is a benign tumour that is characteristic by invagination of nasal and paranasal sinus mucosa epithelium into stroma. Although characterized as a benign tumor, it demonstrates a high recurrence rate and has the capacity to expand by local extension into vital structures. Concurrent squamous cell carcinoma (SCC) has been found in 3-10%) of cases (Rafti et aI., 2007 ; Roodsari, Naraghi & Pourkaveh, 2014 ; Topdag, Mutlu & lIa, 2014). Inverted papilloma of the sinonasal tract is an uncommon lesion in adults and is even less common in children. It is may be found during every period of life. It often increases at the age of 50-60 years, and the proportion of males to females is 3 : 1. While most commonly found in adults, inverted papilloma can occur in children as well. The true incidence of inverted papilloma is therefore difficult to determine. The condition is most probably under-diagnosed, as it may coexist or develop alongside simple inflammatory polyp. It is possible to miss an inverted papilloma coexisting with simple inflammatory polyps, if biopsy sample collect inflammatory polyps only. Inverted papilloma is one of the most frequently seen benign lesions that originate from nasal and paranasal sinus mucosa epithelium stroma (from the Schneiderian membrane). Its incidence rate is 0.5-1.5 per 100,000 people in a year (Rafii et aI., 2007 ; Anari & Carrie, 2010 ; Roodsari, Naraghi & Pourkaveh ; Topdag, Mutlu & lIa, 2014).