A few of the known associations between paediatric cancer and congenital an
omalies are attributable to contiguous-gene syndromes. Neuroblastoma (NB) h
as been linked with an excess of gastrointestinal malformations, but there
is a significant scarcity of associated respiratory anomalies. We report on
two children having an abdominal NE and a bronchogenic cyst diagnosed simu
ltaneously and in different order of appearance. Both masses were removed i
n separated procedures, taking into account the priority and the time seque
nce of chemotherapy. Literature is reviewed, checking that the genetic basi
s for this association is supported by speculations about the oncogene RON.