Outpatient surgical treatment with CO2 laser in oral cancer: immediate and long-term results.

The immediate and long-term results of excising squamous cell carcinoma of the oral cavity or lip by CO2 laser are analysed in 51 consecutive subjects treated as out-patients. From January 1982 to December 1989, 39 cases of T1 and 12 cases of small (less than 2.5 cm) non-infiltrating recurrences of squamous cell carcinoma were treated at the Istituto Nazionale Tumori in Milan.

[Alteration of the erythrocyte membrane skeleton by oxidative damage].

In order to assess the alterations mediated by oxidative agents in physiological and pathological conditions, polyacrylamide gel electrophoresis was performed with dodecyl sodium sulphate of red cell membranes previously subjected to oxidative stress with malonyl dialdehyde generation. The alterations of the normal proteic profile observed were related to the concentration and time of exposure to hydrogen peroxide. The red cell membranes were also treated with the following: (1) increasing doses of hydrogen peroxide with and without peroxidase, and (2) supernatant of neutrophils stimulated with digitonin or activated zymosan.

An intraoperative interactive method to monitor stereotactic functional procedures.

A computer graphic technique is presented, which makes it possible to handle neurophysiological and neuroanatomical data collected during functional stereotactic procedures.