Abstract
Background: We performed a randomized experimental study in a rat model to evaluate the use of 5-aminolevulinic acid-induced (ALA) fluorescence in the laparoscopic diagnosis of peritoneal metastases of ovarian cancer. Methods: We injected 103 ovarian adenocarcinoma cells in the peritoneum of 31 rats. One week later, 5-aminolevulinic acid was injected in the peritoneum (100 mg/kg). After 3 h, we examined the rats using a 10-mm endoscope with a mono CCD camera and a light source developed for photodynamic diagnosis. Metastases on the parietal peritoneum were evaluated independently by two surgeons randomly assigned to use either a conventional light mode or the fluorescence mode. Results: The mean number of metastases detected was 2.84 with conventional laparoscopic light and 5.74 with ALA-induced fluorescence (p <0.0008). Metastases diagnosed by fluorescence were confirmed by pathologic examination. random peritoneal biopsy specimens taken from nonfluorescent areas were negative. conclusion: in this experiment, ala-induced fluorescence improved the detection of peritoneal metastases of ovarian cancer.
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Canis, M., Botchorishvili, R., Berreni, N. et al. 5-aminolevulinic acid-induced (ALA) fluorescence for the laparoscopic diagnosis of peritoneal metastasis. Surg Endosc 15, 1184–1186 (2001). https://doi.org/10.1007/s004640090056
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DOI: https://doi.org/10.1007/s004640090056