[Polyposis of the colon and cancer]. / Polipoza na debeloto chervo i rak.

Polyposis of the colon is a colon cancer predisposition syndrome. Familial adenomatous polyposis (FAP) accounts for 1% of the cases of inherited colorectal cancer (CRC). The National Register of inherited CRC and polyposis of the intestines keeps track of 18 patients from 14 families with FAP. Eight of them have been operated of CRC, on 6 patients preventive colectomy with ileorectal anastomosis has been done and four patients refused surgery. Colectomy has been done due to the malignant development also on a female patient with difused juvenile polyposis with adenomatosis. Of three patients under surveillance with the Peutz-Jeghers syndrome, surgery has been done on one female patient with ileus and bleeding large polyps.

[The characteristics of the electrical activity of the human colon recorded noninvasively]. / Kharakteristika na elektricheskata aktivnost na kolona u chovek, registrirana neinvazivno.

In ten healthy volunteers and ten patients with diseases involving the upper section of the gastrointestinal tract (chronic cholecystitis, chronic gastritis) the electrical activity of the colon is registered noninvasively using skin electrodes to the projection site of sigmoid and colon descendens. Recordings are taken with original gastrograph. Apart from the electrocolograms (EColG), the changes in intracolonic pressure in the group of 10 patients are also registered. Pressure recordings (mechanogram--MG) are done in physioscript "Hellige". Two types of EColG waves are identified depending on their frequency: 1) type A waves with frequency 5.86 +/- 0.59 cpm, and 2) type B waves with frequency 2.35 +/- 0.25 cpm. Type A are low-amplitude waves and correspond to the type A waves seen in the EColG of dogs (described by the authors elsewhere), characterizing the calm period of colonic motility. When A waves appear in the EColG no changes in the mechanograms are registered. Type B are high-amplitude waves, corresponding to the B waves in dogs (described elsewhere); as shown by the mechanograms, the appearance of B waves in the EColG is followed by the appearance of high-amplitude waves--the active period of colonic motility. There is a significant difference between the frequencies of either type of EColG waves and the frequency of waves in the electrogastrograms (EGG) registered synchronously with EColG.

[Single nonspecific ulcer of the rectum]. / Edinichna nespetsifichna iazva na pravoto chervo.

The authors report 4 cases with single, non-specific ulcer of rectum. The diagnosis, in all the cases, was made after endoscopic and histological studies. Single ulcer of rectum is for the first time reported in a pregnant woman, that necessitated the interruption of pregnancy. The ulcer could spontaneously be healed and be combined with an ulcer of duodenum. The patients with single ulcer of rectum should be under follow-up care and yearly controlled in the course of three years.

[2 cases of legionellosis in Greek citizens]. / Vurkhu dva sluchaia na legioneloza pri grutski grazhdani.

Two cases of legionella pneumonia are reported in Greek citizens, treated at the Institute for Treatment of Foreigners--Medical Academy, Sofia. The patients mentioned are with grave basic diseases--pulmonary carcinoma. In one of them pneumonia was with a lethal end in spite of the adequate antibiotic therapy.