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Inicio Radiología Colitis isquémica: hallazgos en TC*
Journal Information
Vol. 44. Issue 3.
Pages 113-117 (January 2002)
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Vol. 44. Issue 3.
Pages 113-117 (January 2002)
Colitis isquémica: hallazgos en TC*
Ischemic colitis: computed tomography findings
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Alfonso Ruíz-Guanter, Tomás Ripollés
Corresponding author
Ripollestom@gva.es

Correspondencia:TOMÁS RIPOLLÉS. Servicio de Radiodiagnóstico. H.U. Dr. Peset. Valencia. Avda. Gaspar Aguilar, 90. 46017 Valencia.
, Luis Simó, María Jesús Martínez-Pérez, Marcos Agramunt
Servicio de Radiodiagnóstico. Hospital Universitario «Doctor Peset». Valencia
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Objetivo

describir los hallazgos en tomografía computarizada (TC) de 28 pacientes con colitis isquémica, analizando su valor pronóstico.

Material y método

estudio retrospectivo de 28 pacientes con diag-nóstico confirmado de colitis isquémica. Revisamos historia clínica y hallazgos en TC. Valoramos en la TC: localización del segmento afec-tado, longitud y grosor, apariencia del limite externo de la pared coló-nica, presencia de ascitis, aire en pared intestinal o porta y patrón de atenuación de la pared tras inyectar contraste intravenoso. Análisis es-tadístico: test de Chi-cuadrado y test de Anova.

Resultados

24 pacientes (86%) presentaron afectación del colon izquierdo y 4 (14%) del derecho. Ningún paciente tuvo afectación pan-colónica. La longitud de los segmentos afectados osciló entre 7 y 35 cm (media: 20 cm). El grosor medio fue de 8 mm. El segmento isqué-mico presentaba contorno liso en 22 pacientes (79%) y borroso en 6. Tras inyectar contraste intravenoso se observó captación en anillos concéntricos en 12 pacientes (43%) y ausencia de capas en los otros 16 pacientes. Se vio ascitis en 8 pacientes (31%). Se observó un solo caso de aire en vena porta, aire intramural o neumoperitoneo. No encontra-mos asociación estadísticamente significativa entre los signos valora-dos en la TC y la evolución del paciente.

Conclusión

Aunque los hallazgos de la TC son inespecíficos pue-den ser útiles para el diagnóstico de colitis isquémica en el contexto clínico adecuado, sobre todo en pacientes mayores con factores predis-ponentes y una distribución segmentaria del proceso. Los hallazgos en la TC inicial no tienen valor pronóstico.

Palabras clave:
Intestino grueso
Colitis isquémica
TC
Diagnóstico
Objective

To describe the findings computed tomography (CT) findings in 28 patients with ischemic colitis, analyzing their prognostic value.

Material and methods

A retrospective study was carried out in 28 patients with a confirmed diagnosis of ischemic colitis. We reviewed the clinical history and CT findings. In the CT images, we assessed the site of the affected segment, length, thickness, appearance of the external end of the colonic wall, presence of ascites, air in the intestinal wall or portal vein and pattern of attenuation following the injection of intravenous contrast. The statistical analysis was done using chi-squared test and ANOVA.

Results

Twenty-four patients (86%) presented left colon involvement and in 4 (14%), right colon was affected. None of the patients had pancolonic involvement. The length of the affected segments ranged between 7 and 35 cm (mean: 20 cm). The mean thickness was 8 mm. The ischemic segment presented a smooth contour in 22 patients (79%) and rough in 6. After injection of intravenous contrast, concentric rings of uptake were observed in 12 patients (43%) and the absence of layers in another 16. Eight patients (31%) presented ascites There was only one case of air in portal vein, intramural air or pneu-moperitoneum. We found no statistically significant association between the signs assessed in CT and disease course.

Conclusion:

Although the CT findings are nonspecific, they can aid in the diagnosis of ischemic colitis within the proper clinical context, especially in older patients with predisposing factors and a segmental distribution of the disease. The CT findings are of no diagnostic value.

Key words:
Large intestine
Ischemic colitis
CT
Diagnostic

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