oncology is an essential specialty at the present time, as the annual incidence of cancer is alarmingly high.the clinical manifestations of cancer are polymorphous, and the way in which they are revealed depends on a number of factors. the internist is at the crossroads of diagnostic assistance, and is therefore obliged to have a basic understanding of oncology.this practical handbook will help young residents in internal medicine to learn the essentials in this field, in order to provide invaluable assistance to our fellow oncologists.