A case of anterior spinal artery occlusion associated with acute Schistosoma mansoni infection is reported, and it is suggested that there is a direct relationship. It is postulated that there is initially an arteritis which leads to obstruction of either the anterior spinal artery itself, its branches, or one or more of the tributary anterior radicular arteries.
A mediastinal tumour was simulated by gross dilatation of the azygos vein resulting from compression by enlarged hilar lymph nodes at the point where it crossed the right main bronchus to enter the superior vena cava. This cause of dilatation of the azygos vein has not previously been reported.Published reports are reviewed and attention drawn to the large proportion of patients (11/19) with this condition who had needless thoracotomies. The possibility of making a diagnosis by means of clinical observation and simple radiological techniques and thus avoiding surgical intervention is discussed.
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