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Master's Dissertation
DOI
https://doi.org/10.11606/D.5.2010.tde-03092010-103902
Document
Author
Full name
Edson Ide
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2010
Supervisor
Committee
Maluf Filho, Fauze (President)
Ferrari Júnior, Angelo Paulo
Sakai, Paulo
Title in Portuguese
Cromoscopia óptica com tecnologia de banda estreita versus cromoscopia com solução de Lugol no diagnóstico do carcinoma superficial de esôfago em pacientes com câncer de cabeça e pescoço
Keywords in Portuguese
Agentes corantes
Carcinoma de células escamosas
Endoscopia gastrointestinal/métodos
Neoplasias esofágicas/diagnóstico
Abstract in Portuguese
Presente estudo teve como objetivo avaliar a utilização da tecnologia de banda estreita com filtros ópticos (TBE) no rastreamento do carcinoma espinocelular do esôfago (CEC), utilizando como método comparativo a cromoscopia com a solução de Lugol. Trata-se de um estudo prospectivo de teste de diagnóstico, para o qual foram avaliados 129 pacientes do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP), com diagnóstico de carcinoma epidermóide de cabeça e pescoço, em programa de rastreamento de tumores secundários, no período de agosto de 2006 a fevereiro de 2007. Os exames de endoscopia convencional, TBE e a cromoscopia com Lugol foram realizados consecutivamente em um mesmo procedimento, e as lesões encontradas foram registradas e submetidas a biópsias. Foram calculados para cada método valores da sensibilidade, especificidade, acurácia, valores preditivos positivos e negativos, valores de verossimilhança positivo e negativo. Foram diagnosticados nove carcinomas superficiais (7%), sendo cinco carcinomas in situ e quatro carcinomas intramucosos, todos detectados pelo TBE e pelo Lugol, porém apenas seis foram diagnosticados pelo exame convencional e destes, nenhum foi menor ou igual a 10 mm. A tecnologia de bandas estreitas com filtros ópticos (TBE) sem magnificação de imagem apresentou resultados superponíveis a cromoscopia com Lugol, método atualmente de escolha para rastreamento do CEC esofágico em grupos de pacientes de alto risco, portadores de tumores de cabeça e pescoço
Title in English
Narrow band imaging versus chromoendoscopy with Lugols solution for esophageal squamous cell carcinoma detection
Keywords in English
Carcinomas squamous cell
Coloring agents
Endoscopy gastrointestinal/methods
Esophageal neoplasms/diagnosis
Abstract in English
Background and study aims: The aim of this study was to compare narrow band imaging (NBI) without magnification and chromoendoscopy with Lugols solution for detecting superficial esophageal squamous cell carcinoma in patients with head and neck cancer. Patients and methods: This is a prospective observational study of 129 patients with primary head and neck tumors consecutively referred to the Gastrointestinal Endoscopy Unit of Hospital das Clínicas, São Paulo University Medical School (FMUSP), Brazil, between August 2006 and February 2007. Conventional examinations, NBI and Lugol chromoendoscopy were consecutively performed, and the detected lesions were mapped, recorded and sent for biopsy. The results of the three methods were compared regarding sensitivity, specificity, accuracy, positive predictive value, negative predictive value, positive likelihood value and negative likelihood value. Results: Of the 129 patients, nine (7%) were diagnosed with carcinomas, five of which were in situ and four intramucosal. All carcinomas were detected through NBI and Lugol chromoendoscopy. Only six lesions were diagnosed by conventional examination, all of which were larger than 10 mm. Conclusions: Narrow-band imaging technology with optical filters has high sensitivity and high negative predictive value for detecting superficial esophageal squamous cell carcinomas and produces results comparable to those obtained with 2.0% Lugol chromoendoscopy in patients with head and neck cancer
 
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EdsonIde.pdf (1.60 Mbytes)
Publishing Date
2010-09-08
 
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