The anomalous venous return forms a curved shadow on chest x-ray such that it resembles a<unk> . This is called the<unk>  Sign. Associated abnormalities include right lung hypoplasia with associated dextroposition of the heart, pulmonary artery hypoplasia and pulmonary sequestration. Incidence is around 1 per 100,000 births.
Scimitar syndrome
Elejalde syndrome
Shell nail syndrome
Larsen syndrome
Jeavons syndrome
Bowen–Conradi syndrome
Saal Bulas syndrome
Burnside–Butler syndrome