Gastrointestinal Cancers in Hospitalized Patients with Cystic Fibrosis: A Nationwide Study, 2010-2020.

BACKGROUND

As life expectancy in cystic fibrosis (CF) patients has increased, so has the incidence of cancers. We aimed to investigate and describe gastrointestinal cancers in CF hospitalized patients from 2010 to 2020.

METHODS

Utilizing the National Inpatient Sample, we extracted cases of CF-associated hospitalizations and gastrointestinal cancers as well as demographic and clinical data. We compared our CF cohort to age, sex, and race/ethnicity-matched controls. Trends were analyzed by Poisson regression.

RESULTS

We identified a total of 902 hospitalizations of CF with gastrointestinal cancer; among them, 539 (59.8%) were colorectal, 139 (15.4%) were liver, 105 (11.6%) were pancreatic, 54 (6.0%) were small bowel, 35 (3.9%) were gastric, and 30 (3.3%) were esophageal cancers. The median age of hospitalization for gastrointestinal cancers ranged from 39 years in liver cancer to 65 years in small bowel cancer. Mortality ranged from 9.5% in pancreatic to 0.0% in small bowel cancer. Colorectal cancer (IRR: 1.09; = 0.005), pancreatic cancer (IRR: 1.17; = 0.023), gastric cancer (IRR: 1.41; = 0.003), and esophageal cancer (IRR: 1.50; = 0.023) hospitalization rates have been increasing over time. Rates of colorectal ( = 0.037) cancer were significantly higher in our CF cohort compared to controls.

CONCLUSIONS

Colorectal cancers are the major gastrointestinal cancers in CF patients, and the incidence of these hospitalizations is increasing.