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A proposal for a four-stage classification of pressure sore severity, with additional groupings for more detailed coding, with the aim of achieving a common standard.

Acute intramural haematoma of the ascending and descending aorta was diagnosed by CT in a patient with chest pain and suspected thoracic aortic dissection. Surgical mortality from aortic replacement in this condition is high. Intramural haematoma has an unpredictable course but studies suggest that resolution of haematoma carries a favourable prognosis against further complications. Serial MR examinations over the next 6 weeks demonstrated resolution of the haematoma. This information influenced the decision not to undertake surgery and the patient was continued on antihypertensive medication. Serial MR examination is a safe and reliable method of monitoring the progress of intramural haematoma and thus guiding difficult treatment decisions.

A patient presented with chest pain, cyanosis and acute ischaemia of the left arm. Aortic dissection was considered to be the likely diagnosis. CT demonstrated multiple large pulmonary emboli and a serpiginous thrombus occluding the origin of the left subclavian artery. Venous thrombosis was proven. The sudden onset of cyanosis followed immediately by a systemic arterial embolus with morphology typical of a venous source was very likely the result of transforaminal shunting induced by massive pulmonary emboli. Post-mortem studies have demonstrated a high incidence of asymptomatic patent foramen ovale in normal individuals. Using contrast echocardiography techniques, any physiological or pathological rise in right heart pressure increases the likelihood of right to left transforaminal shunting of blood or embolic material.