This study consists of an elaborate analysis of over 1,000 cases of renal and ureteral stones, representing all the cases of this type noted in the Lund Clinic since 1923. It is therefore of particular interest to the urologist. The first important problem is the evaluation of the reliability of roentgenographic diagnosis. The introduction of the use of opaque mediums is shown to have improved the results materially. Examination in the presence of pain as compared with examination during the period in which there is no pain also shows interesting differences. The second main aspect of the study deals with prognosis and with conservative and operative methods. Definite differences, for example, as regards recurrences, are brought out.
The work is thoroughly done. The large group of cases adds considerable weight to the conclusions, which in a statistical study lean heavily on numbers. However, the space occupied appears to be considerably