Department of Plastic Surgery and Burns, St. John’s Medical College, Koramangala, Bengaluru 560034, Karnataka, India.
Correspondence Address: Dr. Narendra S. Mashalkar, Department of Plastic Surgery and Burns, St. John’s Medical College, Koramangala, Bengaluru 560034, Karnataka, India. E-mail: email@example.com
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Congenital bilateral macrostomia is a very rare deformity of the mouth, and it is still rarer to see cases of isolated bilateral macrostomia. Although the creation of a symmetric neocommissure is imperative, this presents a technical challenge. A review of the literature for surgical solutions revealed various techniques, but no cases in which a bilateral straight line repair was described and adopted. This report presents the case of a 3-month-old boy with isolated bilateral macrostomia for whom straight line closure was performed on both sides. At 1 year follow-up, the oral commissures are symmetric with aesthetically pleasing scars and no lateral migration.
Bilateral macrostomia, muscle repair, straight line closure
Transverse facial cleft is a rare congenital anomaly with only 21 cases reported in the world literature.[1-3] Many procedures have been developed for correction of this malformation, including the vermilion square flap technique described by Eguchi et al., the Z-plasty technique described by Longacre et al., the two triangular flaps method described by Ono and Tateshita, and another correction presented by Schwarz and Sharma et al. All techniques described highlight the importance and challenge of achieving a properly positioned symmetrical neocommissure. In this report, the straight line repair of isolated bilateral congenital macrostomia is presented for the first time. The father of the child involved in this article agreed to publish the child’s pictures and signed the consent form.
A 3-month-old male child presented to us for definitive correction of congenital bilateral macrostomia [Figure 1]. The lateral extent of the cleft was located at the anterior border of the masseter muscle. After a thorough evaluation to rule out any associated anomalies, the child was scheduled for surgical correction.
Following nasal intubation, the neocommissure was determined by dropping a vertical line from the medial margin of both pupils and marking the well-defined change in color from the normal vermilion to cleft mucosa.
Both these reference points coincided [Figure 2]. The orbicularis oris was dissected and repaired after overlapping the muscle [Figures 3 and 4]. The postoperative period was uneventful [Figure 5]. At 12 months follow-up, there was no lateral migration and the aesthetic appearance was satisfactory with good oral competence [Figures 6 and 7].
The cleft of macrostomia includes a three layered defects of the skin, muscle and mucosa. Discontinuity in the muscle results in an incompetent oral sphincter. The goals of surgery for macrostomia include symmetric placement of the neocommissure, restoration of oral competence by repair of the orbicularis oris muscle, and closure of the buccal mucosa to achieve a normal contour and prevent lateral migration of the commissure. The point of the new commissure must be determined accurately to achieve the above goals. In the current case, a perpendicular line was dropped from the medial margin of the pupil, and the point at which the color of vermilion changes from normal vermilion to cleft vermilion was marked. Both the points coincided, and the entire surgical correction was centered on these points. The stump of the superior orbicularis oris was closed in a double-breasted fashion to the inferior orbicularis stump under adequate tension with reference to the overlying commissure. This maneuver is of vital importance in creating competence, shape and contour at the commissure.
Vermilion square flap commissuroplasty is another technique, which has previously shown good results. The Z-plasty technique has fallen out of favor as the scar is more visible, particularly when smiling. Yoshimura et al. performed a study in which he compared five children with a Z-plasty repair and seven with a simple line repair, and found that Z-plasty gives a less aesthetic result. Schwarz made a similar observation with regard to the Z-plasty repair. Younger patients are also at high risk of lateral migration of the commissure with advancing age with this technique.
In conclusion, simple line closure is a technically simple procedure and provides an esthetically pleasing scar without lateral migration or contraction in patients operated on at a young age.
There are no conflicts of interest.
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