“…In a cohort study by Dietrich et al (2002) of 72 patients with cystic fibrosis and 60 healthy subjects using the aforementioned ultrasound exclusion criteria, the incidence of microgallbladder was 25% (18/72) in patients with cystic fibrosis, versus 0% (0/60) in healthy individuals, which is in lieu of prior literature reports of microgallbladder incidence of 5–45% in patients with CF [10, 12, 15, 17, 18]. In addition to the imaging diagnostic criteria, the diagnosis of microgallbladder has to be taken in clinical context of known history of recurrent bouts of acute cholecystitis-like symptoms, due to the prevalence of microgallbladder mimickers in patients with CF and animal models with CFTR gene mutation, such as congenital gallbladder hypoplasia, gallbladder agenesis, and biliary atresia [1, 4, 19, 20].…”