Biomedical subjects
Publications and source records attributed to D R Rogers.
A case of accidental lethal monochloroacetic acid poisoning is presented, along with a brief review of the mechanisms of intoxication. Although lethal skin exposures have been previously reported, this case appears to be the first instance of oral-route poisoning to be documented.
Fan-shaped stippled burns were produced on the skin when a revolver whose barrel had been modified by the Mag-Na-Port process was fired twice with the side of the muzzle in contact. A grazing wound was produced by one bullet, and an oblique entry was produced by the other. The characteristics of Mag-Na-Port wounds and test shots are described, and these are compared with test shots from two other higher power revolvers.
A white man in a remote area of Alaska shot himself simultaneously with two revolvers--a .41 magnum and a .44 magnum. Only three examples of two-gun suicides are described in the literature.
A 24-year-old woman committed suicide by amputating her left arm immediately below the shoulder joint with a small kitchen knife. No references to such a suicide were found in an extensive literature search.
A case is presented in which the recognition of a tight cylinder gap contact wound was crucial. Experiments were carried out to reproduce the wound which was noted on the hand of a robbery suspect. Tight contact with the cylinder gap of a revolver produces a characteristic, readily recognizable wound. It is characterized by an L-shaped pattern of powder residue. Along one axis a searing burn may occur which may be deep and which may lead to significant tissue destruction.
Intimate intermingling of benign ductal epithelium and nerves was observed in two specimens of breast tissue with extensive adenosis and papillomatosis. The ducts were not situated within lymphatic channels. Rencent investigations have cast doubt on the very existence of "perineural-lymphatics." And while perineural and intraneural spread of malignant cells is unquestionably frequent, growth and extension seemingly occur along loose connective tissue spaces and not within preformed channels. We suggest that the designation "epithelial-nerve intermingling" appropriately describes this phenomenon, and, whereas this is most frequently found with carcinomatous cells, benign epithellum may and, occasionally does, participate. Thus, epithelial-nerve intermingling is neither necessarily indicative of malignant neoplasia nor should it be a decisive criterion in determining the extension of known malignant neoplasm, unless the epithelial cells are clearly atypical.
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