Surgery for Perforation Complicating Colon Cancers

Eleven patients with perforation complicating colon cancers were clinically analyzed with respect to perforation sites and surgical outcome. In general, perforations complicating colon cancers are divided into two categor ies, free perforation and penetration with abscess or fistula formation. It is emphasized that surgical outcome for free perforation is unsatisfactory. Therefore, two-stage operation is recommended and the aim of the treatment should be first concentrated on peritonitis. In conclusion, complete resection of carcinoma is necessary in obtaining a satisfactory result

Primary malignant tumors of the small intestine

From 1967 through 1987, 43 of primary malignant tumors of the small intestine were experienced at the First Department of Surgery, Nagasaki University Hospital and affiliated hospital, and clinically analysed. 1) Carcinoma, leiomyosarcoma and malignant lymphoma occupied one third in number. The preferable location of carcinomas and malignant lymphomas was lower part of the small bowel although that of leiomyosarcoma was upper part. 2) Diagnosis was mainly made by means of laparotomy which was carried out by clinical signs of obstruction or peritonitis. poor prognosis attributed to extension of a disease to nodes and liver. An early and accurate diagnosis of small bowel tumors is necessary for improving the survival rate

Tumor-containing CEA in Colon Cancers

Carcinoembryonic antigen (CEA) in serum and fresh cancer tissue taken at surgery was measured and analyzed in terms of the disease stage. The CEA level in serum (s-CEA ) has become higher with advance in the disease stage. However, in stage V it was lowered as well as CEA level in cancer mass (ca-CEA). It is suggested that S-CEA is influenced by cancer invasion into the vessel wall, tumor necrosis and/or degeneration which ca-CEA may well be migrated from the tumor cells

Individual aerosol particles in the Antarctic uper troposphere

Individual aerosol particles were collected in the Antarctic upper troposphere (24000ft=7.2km, 15000ft=4.5km and 12000ft=3.6km) and morphological features of the particles were investigated through electron microscopy. The results suggested that sulfate-containing particles were dominant in the submicron size range throughout three measurements made on 25 January 1983,29 October 1983 and 13 January 1984. At the end of January 1983 particles with irregular shape coated with sulfuric acid solution were present at an altitude of 24000ft=7.2km. The presence of these particles would be due to the transportation of particles originated from the eruption of El Chichon (April 1982,Mexico)

Features of aerosol particles in the remote oceanic atmosphere

Collections of individual submicrometer particles were carried out with a low-pressure impactor on board of ship over the ocean of the Southern Hemisphere in December 1982,February 1984 and March 1984. The collected samples were examined by using a transmission electron microscope in order to investigate the morphological features of individual particles of 0.04-0.1 μm radius, together with the particle number concentrations. Two types of sulfate-containing particles other than sea-salt particles were found in a wide region and were dominant particles of 0.04-0.1 μm radius. The morphological features were quite different from each other. Particles with distinct outline on the collecting surface had the morphological features similar to ammonium sulfate particles and their estimated concentrations varied largely from 5.5 to 72.6(cm)^. Whereas, particles showing vague outline on the collecting surface were also present in the concentrations ranging from 2.1 to 9.4(cm)^ over the Indian Ocean