TABLE III.
Distribution of Nonsyndromica Phocomelia Cases by Number of Affected Limbs, Upper/Lower Limb Involvement, and Laterality of the Defect, Among 19 Surveillance Programs of the International Clearinghouse for Birth Defects Surveillance and Research
| N | % | % Of total cases | |
|---|---|---|---|
| Monomelic | |||
| Upper right | 15 | 26.3 | |
| Upper left | 22 | 38.6 | |
| Lower right | 5 | 8.8 | |
| Lower left | 15 | 26.3 | |
| Total monomelic | 57 | 100 | 55.9 |
| Dimelic | |||
| Upper/upper | 24 | 58.5 | |
| Lower/lower | 11 | 26.8 | |
| Upper/lower | 6 | 14.6 | |
| Total dimelic | 41 | 100 | 40.2 |
| Trimelic | 0 | — | 0 |
| Tetramelic | 4 | — | 3.9 |
| Total (specified) | 102 | 100 | 100 |
a
Syndromic cases (n = 14) were excluded from the analysis.