Cholecystoses, as dealt with in this book by Dr J. H. J. Ruijs, radiologist, and DrS. G. Th. Hulst, internist, is an interesting clinical and pathologi- cal entity and is unique in that it was introduced into medicine by radiological examination. Soon after the discovery of a usable contrast medium for the gallbladder examination- 35 years ago - some features of cholecystoses have appeared in publications: Rokitansky-Aschoff sinuses and adeno- myomatosis. Jutras' display at the Congress in Montreal in 1962, informed the international radiological world of the common basis for the many...