Preoperative Assessment of Rectal Cancer: Value of Two-Phase Dynamic CT
Journal of the Korean Radiological Society
;
: 441-446, 1995.
Artigo
em Coreano
| WPRIM
| ID: wpr-82511
ABSTRACT
PURPOSE:
The purpose of this study was to evaluate the utility of two-phase dynamic CT, early and equilibrium pahse, in the preoperative staging of rectal cancers. MATERIALS ANDMETHODS:
We performed incremental dynamic CT after rectal infusion of water in 34 patients with pathologically proved rectal cancers. Two-phase dynamic CT findings were prospectively analyzed and correlated with surgical and histopathologic findings. A total of 150ml of nonionic contrast medium was intravenously administered with a power injector at a flow rate of 5ml/sec for 30 sec, and two-phase images were obtained at 30 sec(early phase) and 2 min (equilibrium phase) after bolus injection. Local tumor staging and regional lymph node were classified by TNM staging.RESULTS:
All 34 rectal cancers showed a moderate to marked enhancement in the early phase and a homogeneous and prolonged enhancement of the entire lesion in the equilibrium phase. T-staging of primary tumors were 85.3%(29/34) in early phase and 70.6%(24/34) in equilibrium phase. The accuracy in determining the perirectal fat invasion of rectal cancer was 92%(23/25) in early phase, and 72%(18/25) in equilibrium phase. The sensitivity & specificity of the regional lymph node metastasis were 63.6% and 79.1% in early phase, and 54.5% and 65.2% in equilibrium phase, respectively.CONCLUSION:
Early phase dynamic CT was more accurate for the preoperative staging of rectal cancer than that at equilibrium phase.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Neoplasias Retais
/
Água
/
Estudos Prospectivos
/
Sensibilidade e Especificidade
/
Linfonodos
/
Metástase Neoplásica
/
Estadiamento de Neoplasias
Tipo de estudo:
Estudo diagnóstico
/
Estudo observacional
Limite:
Humanos
Idioma:
Coreano
Revista:
Journal of the Korean Radiological Society
Ano de publicação:
1995
Tipo de documento:
Artigo
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