Biomedical subjects

C M Beard

Publications and source records attributed to C M Beard.

93 records · Page 6Linked to original sources

PubMed1979

Lack of evidence for cancer due to use of metronidazole.

Experimental studies have shown that metronidazole is carcinogenic in rodents and mutagenic in bacteria. In 771 women given metronidazole for the treatment of vaginal trichomoniasis, more cancers developed than had been expected after exclusion of carcinoma of one uterine cervix (observed, 24 cases; expected on the basis of the Connecticut Tumor Registry, 21.7; expected on the basis of the Third National Cancer Survey, 18.4). However, the excess was not statistically significant (P greater than 0.05). The observed and expected numbers of breast-cancer cases were the same, but four lung-cancer cases were observed, whereas 0.6 would have been expected. This finding is confounded by the fact that all four lung cancers developed in women who were smokers. Overall, we observed no appreciable increase in cases of cancer.

Adolescent↗

PubMed1977

The incidence and outcome of mumps orchitis in Rochester, Minnesota, 1935 to 1974.

A population-based study of mumps orchitis over a 40-year period in Rochester, Minnesota, is reported. All medical records for patients with orchitis, atrophic testis, parotitis, and diagnosed or suspected mumps for the population of Rochester were reviewed, and detailed abstracts were prepared for all those with mumps orchitis. Information abstracted included the relationship of testicular to parotid involvement, the presence of unilateral or bilateral testicular involvement and subsequent atrophy, the presence of other complications of mumps, the treatment of mumps orchitis, and the presence of other major diagnoses. Also investigated was the number of subsequent congenital malformations in male offspring of these patients. The age distribution of the patients with orchitis (median age, 29 years) differed appreciably from those with mumps (median age, 8 years). There was no apparent increase in genitourinary malformations in the male offspring conceived after the occurrence of mumps orchitis in the fathers. Of the 132 men who had orchitis, 2 subsequently had testicular neoplasms. Both of these patients were in the group of 47 who were noted to have an atrophic testis after the occurrence of orchitis.

Adolescent↗

PubMed1977

Incidence of malignant testicular tumors in the population of Rochester, Minnesota, 1935 through 1974.

Twenty-four cases of testicular neoplasms detected in male Rochester residents over a 40-year period were identified using the Rochester-Olmsted County epidemiologic data base. This resource contains nearly complete medical information on residents of Rochester, Minnesota, and the surrounding community. An incidence rate of 3.7/100,000 males per year was calculated. This agrees well with other rates reported in the literature which range from 2.5 to 3.7/100,000 per year; there was no detectable trend over time.

Adolescent↗