disease has location mouth disorder commissural lip fistula https://github.com/monarch-initiative/mondo/issues/5963 https://www.malacards.org/card/commissural_lip_fistula A rare otorhinolaryngologic disease characterized by a unilateral or bilateral fistula located at the corner of the mouth, where the vermillion border of the upper lip meets that of the lower lip. The lesion is lined by labial mucosa. It is potentially susceptible to infection. icd11.foundation:27017896 GARD:0019939 UMLS:C5680634 labial commissure cysts and fistulae of the face and oral cavity MONDO:0015381 Orphanet:141061 cysts and fistulae of the face and oral cavity of labial commissure MEDGEN:1809431 cysts and fistulae of the face and oral cavity labial commissure