Computed Tomography Colonography Angiography (CTC-A) prior to colectomy for cancer: A new tool for surgeons.
J Visc Surg
; 159(2): 136-143, 2022 04.
Article
em En
| MEDLINE
| ID: mdl-34794900
ABSTRACT
The pre-operative work-up for non-metastatic colon cancer includes colonoscopy and thoraco-abdomino-pelvic computed tomography (CT) with intravenous (IV) contrast. Colonoscopic determination of the anatomical location of the tumor may be erroneous, particularly with a long redundant colon (dolichocolon), and the search for synchronous colon neoplasms is limited when the endoscope cannot traverse the tumor-bearing segment. While computed tomography colonography angiography (CTC-A) makes it possible to assess distant tumor metastasis, it remains limited for the assessment of loco-regional extension. CTC-A requires specific colonic preparation, controlled colonic insufflation with CO2, and an injection of IV contrast. CTC-A provides a 3-D view of the overall morphology of the colon and precisely localizes the site of the colonic tumor. Merging the images of the colon with those of mesenteric and colonic vessels provides a representation of anatomical vascular variations. This information could help the surgeon to better plan the colectomy. The use of two-dimensional images of CTC-A with sections perpendicular to the major axis of the tumor-bearing colonic segment can provide precise information on the degree of parietal extension and be useful in evaluating the value of neo-adjuvant chemotherapy.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Colorretais
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Neoplasias do Colo
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Colonografia Tomográfica Computadorizada
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Cirurgiões
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Neoplasias Primárias Múltiplas
Limite:
Humans
Idioma:
En
Revista:
J Visc Surg
Ano de publicação:
2022
Tipo de documento:
Article