https://www.semanticscholar.org/topic/Philtrum-with-midline-raphe/5949093
Philtrum with midline raphe | Semantic Scholar
Narrow ridge in the midline of the philtral groove. [pmid:19152422]
philtrummidlinesemanticscholar
https://pmc.ncbi.nlm.nih.gov/articles/PMC11856795/
Anatomical-Based Diagnosis and Filler Injection Techniques: Lips and Philtrum - PMC
Lip augmentation has become increasingly popular in aesthetic medicine, driven by advancements in dermal filler technologies and injection techniques. This...
filler injectionanatomicalbaseddiagnosistechniques
https://medlineplus.gov/ency/article/003302.htm
Short philtrum: MedlinePlus Medical Encyclopedia
A short philtrum is a shorter than normal distance between the upper lip and the nose.
shortphiltrummedlineplusmedicalencyclopedia