A long philtrum is a clinical or imaging observation where the philtrum (middle part of the upper lip) is longer than normal.
Pathology
Associations
It can be associated with a number of anomalies which include
- Aarskog syndrome
- Cornelia de Lange syndrome
- DiGeorge syndrome
- femoral hypoplasia unusual facies syndrome
- Fryns syndrome
- Freeman Sheldon syndrome 1
- Pallister Killian syndrome
- valproate embryopathy - can have a long flattened philtrum
- Weaver syndrome
- Williams syndrome