AUTHOR=Coramusi Carolina , Toro Jessica F. , Pabón Ramón G. , Barreto Mario , Di Nardo Giovanni , Parisi Pasquale , Marín Claudia C. M. TITLE=Case Report: Uncommon complications of central catheters in newborns: two cases of parenteral nutrition extravasation JOURNAL=Frontiers in Pediatrics VOLUME=Volume 13 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2025.1602098 DOI=10.3389/fped.2025.1602098 ISSN=2296-2360 ABSTRACT=Central venous catheters (CVCs) are essential in neonatal care units to ensure prolonged venous access. Despite experienced CVC placement, managing fragile and small newborn vessels involves the risk of traumatic and iatrogenic complications. The most common include phlebitis, thrombosis, sepsis, and catheter displacement. Rarely, catheter displacement may lead to fluid accumulation around serous membranes and adjacent organs, which, if not identified early, can even result in neonatal death. We report two cases: one of neonatal hydrothorax with subsequent lung cystic formation after a parenteral nutrition leakage caused by the displacement of an Epicutaneo-Caval Catheter in the basilic vein of the left arm; the second involves a peritoneal collection of parenteral nutrition from the umbilical venous catheter.