ABSTRACT
La endoscopia estándar no identifica esófago de Barrett. Esta limitación disminuye con magnificación endoscópica, coloración vital y/o virtual que permite observar los patrones de mucosa sugestivos de metaplasia intestinal. Identificar metaplasia intestinal con magnificación endoscópica y cromoscopia virtual realizada con "Flexible Spectral Imaging Colour Enhancement" (FICE) corroborándola con histología. Pacientes: Previo consentimiento se incluyeron a los individuos con indicación electiva de endoscopia digestiva superior. Se realizó endoscopia digestiva superior con equipo Fujinon Inc. EG 590 ZW, y procesador EPX 4400. Consecutivamente se practicó endoscopia con: a) alta resolución, b) FICE, c) alta resolución, d) magnificación, e) FICE y f) alta resolución. Cada patrón encontrado se grabó, se fotografió y se guardó en JPEG en programa Power Point. Los patólogos evaluaron la biopsia del patrón observado sin tener datos del paciente. Se incluyeron 30 pacientes: 11 hombres y 19 mujeres con rango de edad 20-83 años y promedio 51,73 años. Solo con magnificación sola o con cromoscopia virtual se observaron los patrones de mucosa. En el tipo 3 se diagnosticó esófago de Barrett en 33,33% y en ninguno de los otros. Conclusión: La magnificación endoscópica y cromoscopia virtual con FICE identifica metaplasia intestinal y diagnostica esófago de Barrett
Standard endoscopy does not identify Barrett's esophagus or mucosa patterns suggestive of intestinal metaplasia. Endoscopic magnification, vital and or virtual chromoscopy reduces this limitation. Aim: Identify intestinal metaplasia with endoscopic magnification and Flexible Spectral Imaging Colour Enhancement (FICE) corroborating it with histology. Patients: Individuals scheduled to undergo routine upper gastrointestinal endoscopy were enrolled. Upper gastrointestinal endoscopy was performed with Fujinon Inc. 590 EG ZW and EPX 4400 processor. Endoscopy was consecutively performed with: a) high resolution, b) FICE, c) high resolution, d) magnification, e) FICE, f) high resolution. Each found pattern was recorded, was photographed and was saved in JPEG in program Power Point. Biopsy was obtained of the predominant pattern and the pathologist assessed without patient information. Results: 30 patients were included, 11 men and 19 women with 20-83 years and 51.73 years average age range. Patterns of mucosa were observed only with magnification and virtual chromoscopy, Barrett's esophagus was diagnosed in 33.33% of type 3 and none in type 1 and 2. The endoscopic magnification and virtual chromoscopy with FICE identifies intestinal metaplasia and let diagnose Barrett's esophagus.
Subject(s)
Female , Young Adult , Adenocarcinoma/diagnosis , Adenocarcinoma/pathology , Barrett Esophagus/complications , Metaplasia/diagnosis , Metaplasia/pathology , Endoscopy , GastroenterologyABSTRACT
BACKGROUND/AIMS: Narrow band imaging (NBI) is a new technique that is expected to improve the detection rate of colorectal polyps, but results have been inconsistent. The aim of this study was to compare the polyp miss rate and the characteristics of missed colorectal polyps using white light (WL) and NBI. METHODS: 62 patients were randomized into two groups. In the first group (NBI first, NBIF), a colonoscopic examination of each segment (cecum-ascending, transverse, descending, and rectosigmoid colons) was performed first with NBI followed by a re-examination of the same segment using WL. An opposite sequence was applied for the other group (white light first, WLF). RESULTS: 67 polyps were found in the first examination, and 31 polyps were found on the re-examination, resulting in a polyp miss rate of 31.6%. The polyp miss rate was 39% for WLF and 23% for NBIF (p>0.05). Seventy-four small polyps (<5 mm) were found, and miss rates for NBIF and WLF were 20% and 46%, respectively (p=0.01). The polyp miss rate at the rectosigmoid was 11% for NBIF and 54% for WLF (p=0.01). CONCLUSIONS: The polyp miss rate was not significantly different between NBI or WL when a colonoscopy was performed. NBI resulted in a lower polyp miss rate for small (<5 mm) and rectosigmoid polyps than WL.
Subject(s)
Humans , Colonoscopy , Light , Narrow Band Imaging , PolypsABSTRACT
Virtual chromoscopy is a novel technology that enhances endoscopic visualization of superficial mucosal surfaces and microvascular architecture. Currently available virtual chromoscopy techniques include narrow band imaging, Fujinon intelligent color enhancement and I-scan. Refinements are expected to improve detection of the lesions, which will lead to further insight into the pathological processes, in turn, providing guidance in selecting the optimal treatment. Presently, we review the currently available literature regarding virtual chromoscopy and provide technical principles, clinical usefulness, and limitations.