No abstract

Summary— The purpose of this study was to identify the source of bacteria responsible for bacteraemia during and immediately following prostatic surgery. The results indicate that the same organisms responsible for both symptomatic and asymptomatic bacteraemia are more commonly cultured from the resected prostatic tissue than from other possible sources, including the pre‐operative urine sample. A pre‐operative urethral catheter increases the incidence of prostatic infection to almost 100%.

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The human intrafusal fibers were found to consist of two morphological and three histochemical (ATPase reaction) types. Two types of nuclear bag fibers were seen. Type A showed alkali stable and acid labile and Type B showed acid and alkali stable ATPase reaction. The nuclear chain fibers showed only alkali stable ATPase reaction. In the lower motor neuron atrophy, muscle spindle showed thickening of the capsule, atrophy of the nuclear chain fibers, and splitting of the nuclear bag fibers. ATPase reaction showed targetoid Type B nuclear bag fibers and 2 types of nuclear chain fibers. Oxidative enzymes also showed targetoid nuclear bag and chain fibers. In upper motor neuron atrophy the spindle showed no changes.

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An uncommon type of breast carconoma in a male studied by light and electron microscopy, is reported. Light microscopy reveals histologic characteristics and a pattern similar to infiltrating lobular carcinoma in the female breast. The ultrastructural study, because of close similarities in cellular characteristics with previously published reports, gives firm support to the light microscope findings.

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A case of non-progressive congenital myopathy is described in which there was absence of muscles and scapulo-peroneal distribution of weakness. The muscle biopsy showed preferential atrophy of Type I fibers and subsarcolemal bodies. These bodies were composed of an acidic protein with sulphahydryl groups which showed acid stable adenosine triphosphatase activity. The possibility of a maturational arrest as a cause is presented.