This study shows that ultrasound measurement of ONSD is sensitive and specific for raised ICP in the emergency department. Further observational studies are needed but this emerging technique could be used to focus treatment in unstable patients.

No abstract

A number of efforts have been made to collect the available reported cases of tumors of the thoracic wall. In I933, Hedblom39 gathered-29I cases, including those reported by himself37 in I92I, and added 22 additional personal cases. In reviewing the original reports of the collected tumors in his39 paper of I933, it was noted that histologic diagnoses had not been made on a number of the tumors, some of which had been treated by roentgenotherapy, without biopsy. In his earlier paper Hedblom37 included a number of instances of tumors metastatic to the bony thoracic wall, and in both papers did not present, in detail, all his own cases, but gave only statistical data concerning the majority of them. It is not possible, moreover, in many of the earlier reports to evaluate the nature of the neoplasm described. In spite of the difficulty of determining accurately the nature and number 51

Whatever branch of biological xcience we make the subject of our study, the more deeply we enter into it, the more do we realize that classification, which is the goal and outcome of our knowledge-so f a r as it concerns the knowledge in itself-is not the sorting of data into sharply defined departments; such departments do not exist. Rather, it is the arrangement of our data in progressive order'in such a way that we most satisfactorily gain a comprehension of their relationships and the place they occupy in one harmonious scheme. The classes of living objects and of vital phenomena are not distinct; classes as such have no absolute existence; they pass imperceptibly one into the other by many transitional forms. While this is RO, classification is nevertheless necessary.. .. Nowhere do these considerations gain a better illustration than in this study of the different forms of neoplasrns."-Adami. 1Orateful arknowledginent is made of the servires of Mr. Herinan Srliapiro and Mr. Edward P. Walker ill the preparation of the photographs.