[Epidermoid cancer of the anus].

Anal cancer is a rare neoplasm: 1 anal cancer for 100 colorectal cancers. The development of anal cancer is associated with infection by human papillomavirus, which is usually sexually transmitted. Determination of tumour stage is important for planning optimal therapy and for predicting prognosis accurately.

[Contribution of per- and trans-endoscopic pH measurements to the exploration of the upper digestive tract (author's transl)].

Per- and trans-endoscopic pH measurements in the upper digestive tract have provided new and interesting data. Performed by the authors on a series of 314 patients, they showed that the gastric pH is seldom acid, even in duodenal ulcer, and is always alkaline in gastric ulcer and gastric carcinoma. Gastritis may be divided into two groups, depending on whether the pH is normal or hypoacid (4.

[Double contrast exploration of the stomach after surgery (author's transl)].

The authors describe the application of double contrast radiological exploration in the stomach after surgery. They show normal and pathological results after the principal types of gastric surgery: excisions, conservative procedures, hiatal hernia surgery. Apart from the post-operative period, the technique may be used without major difficulties.