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Summary
Congenital unilateral lower lip palsy (CULLP) causes cosmetic asymmetry where one side of the lower lip droops. This common condition, often linked to depressor labii inferior muscle insufficiency, typically has no functional impact.
Area of Science:
- Pediatric Plastic Surgery
- Craniofacial Anomalies
- Congenital Disorders
Background:
- Congenital facial asymmetry presents a spectrum of conditions.
- Congenital unilateral lower lip palsy (CULLP) is a specific type of facial asymmetry.
- CULLP involves the downward drooping of one corner of the mouth.
Purpose of the Study:
- To present findings on congenital unilateral lower lip palsy (CULLP).
- To discuss the characteristics, pathogenesis, and management of CULLP.
- To highlight the importance of considering associated anomalies in neonates with CULLP.
Main Methods:
- Retrospective case review of 39 patients with CULLP.
- Clinical examination focusing on facial symmetry and function.
- Assessment of the depressor labii inferior muscle function.
Main Results:
- CULLP was the most frequent congenital facial anomaly observed.
- Patients presented with purely cosmetic concerns; no functional deficits in speech or suckling were noted.
- The primary cause is likely unilateral depressor labii inferior muscle insufficiency, with the contralateral lip being paralyzed.
Conclusions:
- CULLP is a minor cosmetic deformity but warrants consideration for associated anomalies, especially in neonates.
- Selective facial nerve blocking is a successful treatment modality.
- Early diagnosis and management are crucial for addressing patient concerns.