Two girls with congenital diaphragmatic herniae are reported. Both wer
e discovered to have a balanced reciprocal translocation involving 8q2
2.3. In one girl the translocation was de novo, in the other it was ma
ternally inherited. Uniparental disomy was excluded in both. 8q22.3 ma
y be the location of a gene affecting development of the diaphragm.