The interpretation of X-rays forms an important part of the clinical practice of medicine. While most books on X-ray diagnosis are written by radiologists, this book is different in that it is written by physicians, thus giving it a marked clinical slant. The book is targeted both at undergraduate and postgraduate students in internal medicine, hence the X-rays presented have been carefully chosen to represent a range of radiological investigations besides plain X-ray films: these include computerised tomographic scans, angiograms, venograms, and urograms. The aim of the questions (with answers) accompanying each X-ray is to enable students to systematically question and determine several points upon examination of abnormalities in an X-ray; that is, to enquire about points in the history, to look for presence or absence of physical signs, to consider possibilities, and to proceed to do the further tests to reach a diagnosis. As such, the book serves to emphasise that every X-ray has to be interpreted in the background of clinical data. Suggested answers to the questions are provided.