“…These arguments would explain that the cases of GER associated with microaspirations have chronic damage to the respiratory epithelium and a sustained state of inflammation that justifies the appearance of clubbing. However, in none of the described cases of HT described, chronic lung disease, hypoxemia, or venoarterial shunts that justify its presence have been found (1,6,7,12), so its pathophysiological mechanism remains enigmatic. However, due to the uniqueness of the disappearance of clubbing when treating GERD, it is reasonable to attribute its appearance to the presence of esophagitis (5,12).…”