Thursday, 16 March 2023 12:59

A Clinicopathologic Review of 35 Cases of Sinonasal Papilloma Tumor

1Shaymaa Fadhl Mohsin, MSc, 2Ban Al-Drobie, PhD, 3Bashar H. Abdullah, PhD, 4Ameer DH Hameedi, PhD
1, 2. 3 Department of Oral and Maxillofacial Pathology, College of Dentistry, Baghdad University, Baghdad, Iraq.4 Department of Pathology, College of Medicine, Baghdad University, Baghdad, Iraq.

Corresponding author: Shaymaa Fadhl Mohsin
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Received 13 October 2022.
Accepted for publication on December 09, 2022.
Published March 16, 2023.


sinonasal papilloma, a rare sinonasal lesion that makes up about 0.5% to 4% of all sinonasal tract tumours, is also known as Schneiderian papillomas Tumors. Although benign, the tumor tends to recurrence, local invasiveness, and malignant transformation. The World Health Organization classified sinonasal papillomas into three distinct histological subtypes: exophytic, inverted, and oncocytic. Oncocytic types are less common than exophytic and inverted forms. Objectives The study aimed to review the sinonasal papilloma tumor cases Materials and Methods we used the medical records archives to make a retrospective analysis at the pathology laboratory. Thirty-five patients having a pathologic and clinical diagnosis of sinonasal papilloma of the head and neck were identified from 2015 to 2022. Results patients with sinonasal papilloma with a mean age of patients was 48 ± 18.3 years (ranged 5–78 years). Males represented the majority of cases (74.3%). Nose lesion was the site of most participants (85%). The most common histopathological design was a combined type of Inverted sinonasal papilloma(ISP) and Exophytic sinonasal papilloma(ESP) (48.75%) with different degrees of dysplasia of epithelial lining; there were 18 (51.4%) patients presented with a mild degree of dysplasia, 4 (11.4%) patients presented with a moderate degree of dysplasia, 2 (5.7%) patients given with a severe degree of dysplasia, and 11 (31.4%) patients have no dysplastic tissues. Conclusion These results suggest that SNP is a rare benign tumor in the sinonasal tract of the head and neck region, which exhibits variable degrees of dysplasia. Also, we found age-specific inequalities in time to diagnosis, and the most predominant site was a nasal cavity.


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