Evaluation of inverted papilloma and squamous cell carcinoma by nasal contact endoscopy / Avaliação por endoscopia de contato do papiloma invertido schneideriano e do carcinoma espinocelular nasossinusal

AUTOR(ES)
DATA DE PUBLICAÇÃO

2010

RESUMO

Background: Contact endoscopy (CE) was initially described as a method used in the analysis of uterine and vocal folds histology. The first nasal cavity CE studies achieved promising results regarding its use for the differentiation between benign and malignant lesions, considering that biopsy might cause some complications, especially bleeding. Objective: Describe and compare the findings of CE on inverted papilloma and nasosinusal squamous cell carcinoma and test the effectiveness of this exam as a noninvasive method for in vivo differentiation between these tumors. Methods: The patients included in this study were divided into Group A, whose diagnosis was inverted papilloma, and Group B, whose diagnosis was squamous cell carcinoma. CE results were compared amongst themselves. CE images were presented to examiners not experienced with the method. Results: Twenty-two patients were examined, thirteen in Group A and nine in Group B. The main relevant differences in CE findings between those two groups were: corkscrew vessels, presence of mitoses, keratinization and nuclear pleomorphism in carcinoma, and vacuolated cells in papilloma. The examiners were capable of defining the diagnosis of these nasal tumors only based on CE images. Conclusion: CE may be a useful noninvasive exam to be used in the in vivo diagnosis of inverted papilloma and nasosinusal squamous cell carcinoma, which may enable better preoperative planning.

ASSUNTO(S)

endoscopia histology papiloma invertido endoscopy inverted papilloma carcinoma de células escamosas diagnóstico squamous cell carcinoma diagnosis histologia

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