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C W Wang

Publications and source records attributed to C W Wang.

56 records · Page 4Linked to original sources

An atomic basis of cancer (V): A new marker in animal tumors.

Particle-induced X-ray emission (PIXE) analysis can be applied to mark (or to localize) a cancer lesion in a benign environment in test animals. We synthesized hematoporphyrin derivative (HPD) with rare earth metals to form lanthanide-HPD to enhance the localizing efficiency. The sensitive PIXE detection of trace elements in amounts on the order of nanograms or less could possibly be used to probe carcinogenesis at the level of the cell. To explain the present approach, we present the results of an experiment in which we used paraseodynium-HPD localizer.

Animals↗

New approaches in laparoscopically assisted radical vaginal hysterectomy.

BACKGROUND: To illuminate our new approaches in laparoscopically assisted radical vaginal hysterectomy. METHODS: Twenty-four women underwent laparoscopically assisted radical vaginal hysterectomies during the period from March 1994 to May 1995 in our institute. Indications for this surgery, including cervical carcinoma stage 1A to 2A, were the same as for abdominal radical hysterectomy. The procedure was performed under general endotracheal anesthesia through means of the technique of videolaparoscopy. Two new approaches were recruited in these procedures including using middle upper abdomen as the primary trocar site and using ureteral stent or illuminator as a ureter marker. RESULTS: All of these patients completed the procedures without exception. The mean hospital stay was 8.2 +/- 3.2 days. The average blood loss was 540 +/- 210 ml with a range from 100 to 1800 ml. Operating time was from 220 to 420 minutes with a mean time of 325 minutes. In all cases pelvic lymphadenectomy was performed without exception, yielding an average of 13.2 macroscopic nodes. Two of them metastatic lymph nodes were noted. No ureteral injury occurred after using the ureteral stent as a marker. CONCLUSIONS: In this preliminary result, using middle upper abdomen as the primary trocar site could provide the surgeon with a wider and familiar visual angle, thus making the pelvic or para-aortic lymphadenectomy much easier. Moreover, using the ureteral illuminator as a marker during unroofing the ureter laparoscopically is helpful to prevent the ureteral injury and facilitating the procedures in laparoscopically radical hysterectomy.

Adult↗