[NBI utility and optical magnification in the differential diagnosis of neoplastic and non-neoplastic colorectal lesions in Peru].
BACKGROUND
The Narrow Banding Image NBI-Colonoscopy and Optical Magnification is a useful method for evaluation in vivo of capillary pattern and pit pattern of colorectal polyps.


OBJECTIVE
To evaluate the usefulness of NBI and Optical Magnification in differential diagnosis of colorectal polyps using Sano-Emura and Kudo's Classifications.


METHODS
Between january and may 2010, 86 colonoscopies were analyzed by two colonoscopists; 136 polyps were found and histologically analyzed. All polyps under 10 mm (119) were evaluated in accord with Sano-Emura and Kudo's classifications; data was analyzed together with an epidemiologist in cancer.


RESULTS
The sensitivity, specificity and diagnostic accuracy was 97.3%, 90.7% and 94.9%, respectively, for Sano-Emura's c lassification. The sensitivity, specificity and diagnostic accuracy was 94.7%, 90.6% and 93.2%, respectively, for Kudo's Classification.


CONCLUSIONS
The colonoscopy with NBI and Optical Magnification is an effective, reliable and simple method for Colorectal neoplastic and non - neoplastic differential diagnosis when Sano-Emura's and Kudo's Classifications are used.
Instituto de Medicina Avanzada en Gastroenterología, Lima-Perú.
Olivia
O
Canales Sevilla
Juan
J
Miyagui Maeda
Juan
J
Takano Moron
Ebert
E
Poquioma Rojas
D000328:Adult; D000368:Aged; D003108:Colonic Diseases / Q000473:pathology*; D003113:Colonoscopy; D015179:Colorectal Neoplasms / Q000473:pathology*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010568:Peru; D011446:Prospective Studies; D012002:Rectal Diseases / Q000473:pathology*