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Rationale and Objectives: Screening mammography data can be reported on a breast-specific or woman-specific level, and much mammography data available for research is woman-specific. The purpose of this study was to determine if woman-specific screening mammography data are sufficient for research and reporting by measuring and comparing the accuracy of screening mammography on a breast-specific and on a woman-specific level., Materials and Methods: Definitions for true-positive and false-positive mammography results were developed to distinguish between breast-specific and woman-specific calculations. The sensitivity, specificity, and positive predictive values of screening mammography were calculated on a breast-specific and on a woman-specific basis for the entire population of the Carolina Mammography Registry and for a randomly selected subset of the population., Results: Only small differences were found in breast-specific versus woman-specific calculations of sensitivity, specificity, and positive predictive values for both the entire population and the smaller subset population. For both populations, woman-specific sensitivity and positive predictive values were slightly higher than the same breast-specific values, and woman-specific specificity was slightly lower., Conclusion: For research and reporting, woman-specific data are sufficient.

A retrospective survey of 38 cases of Moyamoya disease was done. The majority of patients were adults, and Chinese. There was a relative paucity of juveniles in our series which appear to differentiate it from Japanese results. The majority of adults presented with either subarachnoid haemorrhage or motor paresis. Associated aneurysms were noted in 3 cases. This study represents one of the largest series of this condition published outside Japan and appears to confirm the belief that this is not a condition peculiar to the Japanese and may occur more commonly outside Japan than is commonly believed.

Young National Servicemen were screened for cardiac murmurs and 74 cases of mitral valve prolapse were diagnosed. PA and lateral Chest X-rays were taken. 18% of the subjects had straight back, 24% had scoliosis, 38% had sternal abnormalities while 58% had one or more thoracic skeletal deformities. Comparisons were made with other series. Four radiographic measurements (AP diameter, AP/transthoracic ratio, vertebral index and angle of kyphosis) done differed significantly from the normal population. These measurements were also compared with foreign series. There were 2 cases with 'pancake' appearance of the heart. The significance and aetiology of this association is discussed. Mitral valve prolapse should be excluded in patients with thoracic skeletal abnormalities, especially those presenting with cardiac murmurs.