Esophageal tumors: The keys to diagnosis by pneumo-computed tomography.

OBJECTIVE: To review and describe the most characteristic radiological findings of the most frequent esophageal tumor lesions, with emphasis on the esophago-gastric distention technique pneumo-computed tomography performed in our institution. To know the main advantage of this distension technique. CONCLUSION: Malignant tumor lesions (predominantly squamous cell carcinoma in the mid esophagus and adenocarcinoma in the distal esophagus) present as asymmetric wall thickening, mucosal irregularity, or mass extending into adjacent organs with lymph node involvement. Benign tumors (mainly leiomyoma being the most frequent and others such as lipoma) present as endoluminal growth, with defined borders and homogeneous attenuation. Post-contrast enhancement is scarce or moderate. The technique of computed tomography pneumotomography technique achieves an additional distension of the esophageal lumen in all cases. It allows delimiting the superior and inferior borders of the lesions, helping the surgeon to define the therapeutic strategy.

Correlation between pneumo-computed tomography and pathology findings for subepithelial gastric lesions.

OBJECTIVE: This article aims to show the usefulness of the pneumo-computed tomography gastric distention technique in the detection and morphological characterization of subepithelial gastric lesions. We correlate the pneumo-computed tomography and pathology findings in lesions studied at our institution and review the relevant literature. CONCLUSION: Pneumo-computed tomography, combined with multiplanar reconstructions, three-dimensional reconstructions, and virtual endoscopy, is useful for delineating the morphological details of subepithelial gastric lesions, thanks to the additional gastric distention. This technique better delimits and characterizes the upper and lower margins of the lesions. Pneumo-computed tomography can be considered a useful noninvasive imaging techniques for characterizing these lesions.

Correlación anatomopatológica con neumo-tomografía computarizada de lesiones gástricas subepiteliales / Correlation between pneumo-computed tomography and pathology findings for subepithelial gastric lesions

Objetivo: El propósito de este artículo es destacar la utilidad de la técnica de distensión gástrica neumo-tomografía computarizada en la detección y caracterización morfológica de las lesiones subepiteliales gástricas estudiadas en nuestra institución, con su correlación de anatomía patológica y una revisión de la literatura. Conclusión: La neumo-tomografía computarizada combinada con las reconstrucciones multiplanares, las reconstrucciones tridimensionales y la endoscopia virtual es útil para delinear los detalles morfológicos de las lesiones subepiteliales gástricas debido a la distensión gástrica adicional. Se logra una mejor delimitación de sus bordes superior e inferior, así como las características de sus márgenes. Puede considerarse una técnica de imagen útil y no invasiva para la caracterización de estas lesiones.(AU)

Objective: This article aims to show the usefulness of the pneumo-computed tomography gastric distention technique in the detection and morphological characterization of subepithelial gastric lesions. We correlate the pneumo-computed tomography and pathology findings in lesions studied at our institution and review the relevant literature. Conclusion: Pneumo-computed tomography, combined with multiplanar reconstructions, three-dimensional reconstructions, and virtual endoscopy, is useful for delineating the morphological details of subepithelial gastric lesions, thanks to the additional gastric distention. This technique better delimits and characterizes the upper and lower margins of the lesions. Pneumo-computed tomography can be considered a useful noninvasive imaging techniques for characterizing these lesions.(AU)