[Aspergillus colonization of a pulmonary sequestration. Apropos of a case associated with erythema nodosum].

We describe a case of interlobar pulmonary sequestration diagnosed at thoracotomy in which there were a number of unusual features at presentation: an opacity with multiple cavities, positive aspergillus precipitins, erythema nodosum and a haemothorax complicating a trans-thoracic needle biopsy. Although it is unusual to find such a constellation of symptoms and signs they could be explained in a logical fashion.