This analysis continued to show increased parenchymal and interstitial podoplanin staining in the CLD group versus controls at the respiratory bronchiolar and saccular/alveolar ductal levels reaching significance at the alveolar ductal level with percent parenchyma stained (0.07% ± 0.02% versus 0.04% ± 0.01 CI −0.05 to −0.003, P = 0.03). Here, PDPN is linked to congenital secretory chloride diarrhea 1.