Examinations of the etiology of congenital cicatricial presentations, which include congenital constriction bands and cicatricial presentations of cleft lip, have provided several theories that explain their development; however, they do not explain all the aspects involved in these malformations. In the present article, we present the cases of 4 patients with Keith's lip scar who underwent cheiloplasty using the spina technique. These cases were compared with 1 case of a patient with a traumatic scar. Tissue samples were obtained from all the patients for histopathological examination using hematoxylin-eosin staining. The cases under study exhibited similarities in embryonic skin and common scar tissue.
Cleft lip; Lip diseases; Mouth abnormalities; Amniotic band syndrome
