[Pancreatic pseudocyst. Description of a case in an infant].

A case of pancreatic pseudocyst (PP) in a 22 month old girl is described. The lesion was huge and posed diagnostic difficulties which led to an inadequate procedure. The anatomic lesion consisted of a lymphocytic pancreatitis associated with two previous episodes of "erratic migration" of Ascaris lumbricoides. Physiopathology and clinical picture is discussed and emphasis is made on the need of suspicion of pancreas as the site of origin of disease in spite of short age.