[False appearances of aortic arch in laryngomalacia (author's transl)].

The authors report six cases of congenital laryngeal stridor in which appearances of oesophageal compression had led to a diagnosis of abnormalities of the aortic arches. Two children underwent surgery, thoracotomy failing to reveal any abnormality. The other four were investigated by endoscopy which made it possible to eliminate the diagnosis of tracheal compression.

Renal abscess in children. A rare but important radiological diagnosis.

As in adults, renal abscess in children mimicks a tumoral syndrome. Renal abscess, although infrequent, should however be kept in mind because it is important to make an early diagnosis. The reason is simply that the treatment fo the two conditions is so different.