[Computerized tomographic diagnosis of hepatocarcinoma after injection of lipiodol into the hepatic artery]. / Diagnostic scanographique des hépatocarcinomes après injection de lipiodol dans l'artère hépatique.

Iodized oil (lipiodol) injected into the hepatic artery is selectively retained by hepatocarcinomas, as demonstrated by computerized tomography (CT) performed one week after the injection. The value of this technique for the diagnosis of hepatocarcinoma was assessed in a retrospective study of 45 patients. In 39 per cent of the cases intrahepatic tumoral extension was determined by the iodized oil which showed tumoral nodules that had not been detected by conventional methods, such as ultrasonography and CT alone. The lesions revealed by the iodized oil were small nodules around the main tumour. The combined iodized oil-CT technique plays an important role in the choice of treatment, especially when surgical excision is contemplated. It might also contribute to an early diagnosis of hepatocarcinoma in patients at risk, as illustrated by four of our cases where conventional morphological examinations had been negative.

[Problem posed by the prevention and detection of colorectal cancers]. / Problèmes posés par la prévention et le dépistage des cancers colo-rectaux.

The incidence of colonic and rectal carcinoma is in constant progression. The detection and destruction of polyps is the only effective means of reducing the number of adenocarcinomas. The technical means of detection are well known and fully proved: rectosigmoidoscopy, thin layer double contrast enema, colonoscopy. The true problem is that of the cost of this prevention. It is important to define high risk groups in which these tests should be carried out as a routine. Furthermore it is necessary to know whether blood tests or examination of the stools may be considered as a means of detection of polyp or at least certain types of potentially malignant polyp. without suggesting a considerable increase in the number of medical investigations, one may hope for better use of sigmoidoscopy and double contrast barium enema. These two examinations represent undoubtedly the essential factor in the diagnosis of colonic and rectal tumours.