PDPN and congenital secretory chloride diarrhea 1: Average interstitium podoplanin stained remained increased at the respiratory bronchiolar and saccular/alveolar ductal regions in the CLD group versus controls but did not reach statistical significance (1.36% ± 0.37% versus 0.93% ± 0.4% CI −1.03 to 0.16, P = 0.12 for the respiratory bronchiolar level and 0.39% ± 0.13% versus 0.31% ± 0.17% CI −0.34 to 0.16, P = 0.4 for the saccular/alveolar ductal level).