# Infant with Known Dandy–Walker Malformation and Poor Feeding Found to Have Additional Diagnosis

## TL;DR

A late preterm infant with Dandy–Walker malformation and feeding issues was found to also have Noonan syndrome caused by a PTPN11 gene mutation.

## Contribution

This case report highlights a rare co-occurrence of Dandy–Walker malformation and Noonan syndrome with a PTPN11 mutation.

## Key findings

- The infant had Dandy–Walker malformation and Noonan syndrome with a PTPN11 gene mutation.
- This is one of the few reported cases of Dandy–Walker malformation associated with Noonan syndrome.
- Overlapping symptoms can obscure the diagnosis in infants with multiple pathologies.

## Abstract

There are few reported cases of Dandy–Walker Malformation associated with Noonan syndrome (NS).

We herein present a case of a late preterm infant with Dandy–Walker malformation (DWM) that underwent a workup for feeding difficulty and was found to have NS. This is one of the few reported cases of DWM with NS having a PTPN11 gene mutation.

Overlapping clinical features may disguise diagnosis in infants with multiple pathologies.