Choanal Atresia and Lymphedema, also known as lymphedema-posterior choanal atresia syndrome, is related to choanal atresia, posterior and hereditary lymphedema i. An important gene associated with Choanal Atresia and Lymphedema is PTPN14 (Protein Tyrosine Phosphatase Non-Receptor Type 14). Affiliated tissues include skin, and related phenotypes are choanal atresia and lymphedema