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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 AND

METHODS:

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.
Assuntos
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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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