A 36-year-old housewife presents in the emergency department complaining of progressively increasing breathlessness over the lasttwo weeks, accompanied by wheeze and a productive cough. You are the medic on duty… 100 Cases in Radiology presents 100 radiological anomalies commonly seen by medical students and junior doctors on the ward, in outpatient clinics or in the emergency department. A succinct summary of the patient’s history, examination and initial investigations, including imaging photographs, is followed by questions on the diagnosis and management of each case. The answer includes a detailed discussion of each topic, with further illustration where appropriate, providing an essential revision aid as well as a practical guide for students and junior doctors. Making clinical decisions and choosing the best course of action is one of the most challenging and difficult parts of training to become a doctor. These cases will teach students and junior doctors to recognize important radiological signs, and the medical and/or surgical conditions to which these relate, and to develop their diagnostic and management skills.