ABSTRACT
Early gastric cancer is defined as gastric cancer confined to the mucosa or submucosa, irrespective of lymph node metastasis. Endoscopic submucosal dissection is a standard treatment of early gastric cancer. The nonextension sign consists of a protrusion of the surrounding mucosa into the lumen, resembling a trapezoidal shape. This phenomenon occurs when massive submucosal invasion by a cancer increases the thickness and rigidity of the gastric wall and may be useful to differentiate between mucosal or microinvasive submucosal and invasive submucosal cancers. Our case demonstrates the usefulness of the absence of the conventional endoscopic nonextension sign as a marker to decide the adequate approach for mucosal lesions.
ABSTRACT
La colonoscopia se considera como la prueba de elección para el tamizaje del cáncer colorrectal. Su eficacia dependerá de múltiples factores entre los que se incluyen una preparación adecuada, una inspección meticulosa al realizar la exploración, apego a las recomendaciones de seguimiento y una capacitación óptima del colonoscopista. Para asegurar que los endoscopistas a nivel nacional brinden una colonoscopia de calidad, surge la iniciativa de establecer indicadores de calidad locales. A continuación, la Asociación Costarricense de Gastroenterología y Endoscopia Digestiva propone los indicadores de calidad para la realización de colonoscopias seguras y efectivas.
Colonoscopy is considered as the gold standard study for colorectal cancer. The efficacy of colonoscopy depends on multiple factors, including a correct bowel preparation, careful inspection tecnique, close following of the screening guidelines and adecuate training of the colonoscopist. The initiative of establishing local quality indicatorsarise from the necessity to arise the quality of the colonospy delivered by Costarican endoscopists. On this document, the Costarican Society of Gastroenterology and Digestive Endoscopy establishes quality indicators for performing safe and effective colonoscopy.