Correlation between retinal and pelvic vascular status: a determinant factor in patients undergoing pelvic irradiation for gynecologic malignancy

Effects of radiation damage on intestinal morphology

The current flow of papers on intestinal structure, radiation science, and intestinal radiation response is reflected in the contents of this review. Multiparameter findings and changes in compartments, cells, or subcellular structure all contribute to the overall profile of the response. The well-recognized changes in proliferation, vessels, and fibrogenesis are accompanied by alterations in other compartments, such as neuroendocrine or immune components of the intestinal wall. The responses at the molecular level, such as in levels of hormones, cytokines, or neurotransmitters, are of fundamental importance. The intestine responds to localized radiation, or to changes in other organs that influence its structure or function: some structural parameters respond differently to different radiation schedules. Apart from radiation conditions, factors affecting the outcome include the pathophysiology of the irradiated subject and accompanying treatment or intervention. More progress in understanding the overall responses is expected in the next few years.

Metronidazole as a radiosensitizer and high-dose radiation in advanced vulvovaginal malignancies, a pilot study

Advanced vulvovaginal cancers have a survival of less than 25% in 5 years when treated with radiotherapy alone. The radiosensitizer metronidazole was used with unconventional radiation fractions in 10 patients. Local control was achieved in 9 out of 10 patients treated. Five of 10 patients have remained free of disease 9-30 months postdiagnosis. Two patients died with metastatic disease, but with local control. In only 1 patient did this approach fail to control local disease. The outcome of these 10 patients represents a significant improvement over conventional radiation. A randomized prospective study has been started on the basis of this pilot study.