[Motility of the colon: electric and manometric description of the mass movement].

"Mass movement" was described at the beginning of the century by radiologists, who occasionally observed during exploration a sudden transport of barium from one section of the colon to another. In this paper we focused our attention on the electromechanical factors that accompany evacuation through a colostomy, since we thought that these would be the myoelectrical and pressure translation of the "mass phenomenon" described by radiologists. We used an electromyographic recording probe to which a conventional microtransducer probe was affixed by suction.

[Physiopathology of paralytic ileus secondary to chemical peritonitis. Experimental study in dogs].

The intestinal paralysis that follows peritonitis has been classically explained as the result of local inflammation of the overlying serosa (Stokes's law). The main object of this study is to determine if these motor alterations, the most relevant of them being intestinal paralysis, are really due to local factors or to general factors in view of the intense affectation that peritonitis induces in the organism. For this purpose we used animals with an isolated and exteriorized intestinal loop to study loop motility during peritonitis in the absence of direct local contact with the process.

[Colorectal cancer: are diagnostic delay, degree of spread and survival related? Clinical analysis of 307 cases followed up for more than 4 years].

It seems logical to think that the longer the interval between the patient's first symptom of colorrectal cancer and operation, the greater the tumoral extension found by the surgeon will be, and the lower the postoperative survival. Nevertheless, there is much evidence to indicate that this may not always be true. We've analyzed the problem in 307 patients operated of colorectal cancer in our service from January 1979 to December 1984 and followed-up until now.

[Colorectal carcinoma in young adults. Our experience].

Colorectal cancer usually appears in patients over 60 years-old. However, all the series communicate a small percentage of cases in young patients, ranging from 2 to 10% of the total. We have found important discrepancies between authors who have worked on the possible distinctive characteristics of colorectal cancer of the young over the last decade.