Classification of the patients according to the length of the aganglionic segment (phenotype) and the RET mutation status
| Phenotype | With mutation | Without mutation |
|---|---|---|
| LSA, long segment aganglionosis; SSA, short segment aganglionosis. | ||
| LSA (n = 14 | 6 (37.5%) | 8 (11.3%) |
| SSA (n = 73) | 10 (62.5%) | 63 (88.7%) |
| (n = 16) | (n = 71) | |