Imaging characteristics of postnatally confirmed fetal third or fourth branchial apparatus anomalies compared with consecutive cases of fetal lymphatic malformation
| Third or Fourth Branchial Apparatus Anomalies (n = 4) | Lymphatic Malformation (n = 14) | P Value | |
|---|---|---|---|
| Unilateral | 4/4 (100%) | 5/14 (36%) | P = .08 |
| Unilocular | 4/4 (100%) | 2/14 (14%) | P = .005 |
| Medial beak | 4/4 (100%) | 2/14 (14%) | P = .005 |
| Combination of findings: unilateral, unilocular, with medial beaking | 4/4 (100%) | 0/14 (0%) | P <.001 |
| Vascular displacement | 4/4 (100%) | 7/14 (50%) | P = .12 |
| Mediastinal involvement | 3/4 (75%) | 5/14 (36%) | P = .28 |
| Displaces airway | 3/4 (75%) | 11/14 (79%) | P = 1.00 |
| Extends posterior to airway | 4/4 (100%) | 7/14 (50%) | P = .07 |
| Contacts thyroid | 4/4 (100%) | 9/14 (64%) | P = .12 |
| Areas of susceptibility on EPI | 0/4 (0%) | 4/11 (36%) | P = .41 |
| Areas of T1 hyperintensity | 0/3 (0%) | 3/12 (25%) | P = 1.00 |