Cleft 0, or median craniofacial dysraphia. Its course is outlined from the anterior fontanelle through the frontal bone, crista galli, midline of the nose, columella, lip, and maxilla, and may actually involve the tongue, lower lip, and mandible. Its cranial extension is cleft 14.
Cleft 1, or paramedian craniofacial dysraphia, courses through the frontal bone and the olfactory groove of the cribriform plate, between the nasal bone and the frontal process of the maxilla, and through the maxilla between the central and lateral incisors. Its cranial extensions is cleft 13.
Cleft 2, or paranasal cleft, is similar to cleft 1, but it is slightly more lateral. Its cranial extension is cleft 12.
Cleft 3, or oculonasal cleft, is a medial orbitomaxillary cleft. Its course runs through the lacrimal bone, the frontal process of the maxilla, and into the alveolus between the lateral incisor and the canine. The defect ends as a cleft lip. Its northbound continuation is cleft 11.
Cleft 4, or oculofacial 1 cleft, is a central orbitomaxillary cleft. The upper portion of its course is similar to that of cleft 3. It courses medially to the infraorbital nerve and through the maxillary sinus, causing exstrophy of the antral mucosa. It ends, as in cleft 3, between the lateral incisor and the canine.
Cleft 5, or oculofacial 2 cleft, is a very rare lateral orbitomaxillary cleft, the course of which runs through the orbital, floor, lateral to the infraorbital nerve and the maxillary sinus. The soft tissue deformities consist of a coloboma of lateral third of the lower lid, ending as a cleft of the lip slightly medial to the commissure.
Cleft 6 separates the maxilla from the malar bone. The corresponding soft-tissue deformities consist of a coloboma of the lower lid and a "sclerodermic" furrow of skin from the coloboma to the angle of the mandible.
Cleft 7 courses between the malar and the temporal bones. The zygomatic arch is usually absent.
Cleft 7, however, may exist as pure macrostomia without any appreciable skeletal or ear deformity.
Cleft 8 is a frontozygomatic cleft extending to the greater sphenoidal wing. In the tissues there may either be a true cleft of the lateral canthus or a notch of the lower eyelid close to the canthus with dermatocele. Combinations of cleft 6,7, and 8, in varying degrees of severity, constitute the Teacher Collins syndrome.
Cleft 9 is an upper lateral orbital cleft of the superolateral orbital ridge-angle with a corresponding coloboma of the upper lid.
Cleft 10 is an upper central orbital cleft of the frontal bone, supraorbital ridge, and orbital rod. It could be associated with coloboma of the medial third of the upper lid and/or eyebrow.
Cleft 11 is an upper medial orbital cleft through the frontal bone, frontal sinus and lateral mass of the ethmoid, with is medial to the supraorbital neurovascular bundle.
The present case corresponds to a Tessier cleft # 7, which can be found with diverse names in the literature. It has an incidence of 1.8-2.5:10,000 deliveries. It is more common in boys than girls. The unilateral form is 6 times more common than bilateral one.
The anomaly has deformities of both the bony and soft tissue component. The importance of cleft #7 is that the malformation involves the ascending branch of the mandible and may be associated with facial paralysis. In spite of a bilateral defect, the lesion may be asymmetrical . The bilateral cleft are less common that the unilateral form and is usually symmetrical5,6,7,8,9. Another example of a less severe bilateral cleft 7
References
[1] Seedes JW, Cefalo RC, Herbert WN. Amniotic band syndrome. AM J Obstet Gynecol 1982;144:243-8
[2] Luebke HJ, Reiser CA, Pauli RM. Fetal disruptions: assessment of frequency, heterogeneity, and embryologic mechanisms in a population referred to a community-based stillbirth assessment program. Am J Med Genet 1990;36:56-72
[3] Bronshtein M, Zimmer EZ. Do amniotic bands amputate fetal organs? Ultrasound Obstet Gynecol 1997;10:309-11.
[4] Beryl R. Benacerraf, M.D. Ultrasound of Fetal Syndromes 1998; Churchill Livingstone p 117
[5] Adnan Uzunismail, Ali Ozdemir MD Plastic and reconstructive surgery, July,1995;96:l:224-225
[6] Wolfe Anthony S. MD. The influence of Paul Tessier on our current treatment of facial trauma, both in primary care and in the management of late sequelae. Clinics in Plastic Surgery Vol.24 No.3 July 1997.
[7] Georgiage G, Riefkohl R, Levin L: Plastic, maxillofacial and reconstructive surgery. 3rd edition Williams And Wilkins 1997
[8] Anastassov Y, Ghestem M, Martinot V, Pellerin P. Two patients with multiple facial clefts including cleft lip and palate. J Craniofac Surg. 1993 Jul;4(3):148-52.
[9] Stelnicki EJ, Hoffman W, Foster R, Lopoo J. Longaker M. The in utero repair of Tessier number 7 lateral facial clefts created by amniotic band-like compression. J Craniofac Surg. 1998 Nov;9(6):557-62