Ponad 7000 publikacji medycznych!
Statystyki za 2021 rok:
odsłony: 8 805 378
Artykuły w Czytelni Medycznej o SARS-CoV-2/Covid-19
© Borgis - New Medicine 3/1999, s. 37-38
Andrzej Makowski
Surgical management of unilateral congenital atresia of the ear
Department of Otolaryngology, Institute of the „Polish Mother´s Hospital”, Łód
Head of Dep.: Ass. Prof. Andrzej Makowski, M.D.
Summary
This paper presents the arguments of followers and opponents of surgical management of unilateral congenital „atresia” of the ear in childhood, and presents the reasons for surgery on children with unilateral developmental anomalies of the external auditory canal, and of the middle ear, performed in the Department of Otolaryngology. Among 8 children and teenagers (6 boys and 2 girls) aged 7-16 years, the principal indication for operation was the desire to correct the cosmetic defect and - in the second place - to improve hearing. The positive postoperative anatomical and functional effects obtained provided real satisfaction for the patients.
Introduction
A medical team attending a child with congenital anomaly of the ears is primarily concerned with minimizing the negative effects of this condition on the mental and speech development of the child. There is no room for doubt as to the advisability of surgical management of bilateral congenital atresia of the ears which considerably delays the child´s development, but opinions are divided on the indications for surgery on a child with such an anomaly on one side only. The guiding principles for surgical treatment of the canal and middle ear are as follows: 1) to the cosmetic defect, i.e. to create an auditory developmental anomaly of the external auditory gain a conversational hearing level, 2) to correct the foramen and auditory canal, 3) to remove possible inflammatory changes and cholesteatoma. The authors, engaged in the treatment of congenital aural anomalies, unanimously stress the point that these anomalies, apart from their afore-mentioned retardant effect on the child´s mental and speech development, at the same time exert a negetive influence on the emotional state of the child. The latter effect manifests itself particularly in children and teenagers attending school. The developmental anomaly of the ear often gives rise to complexes, to a feeling of embarassment, self consciousness and defectiveness, and it is also a frequent cause of lack of acceptance from classmates. Belluci, House, Livingstone, Weerda and co-workers (1, 5, 7, 10) are among the opponents of surgical treatment for unilateral developmental anomaly of the ear in childhood and adolescence. These authors maintain that unilateral aural malformation does not affect speech development, and that the hearing improvement gained is of negligible benefit to children who become regular patients at outpatient clinics because of postoperative suppuration. Crabtree, Glasscock and Schwaber (2, 4) are non-commital on the question of early surgical treatment for unilateral aural malformation. Zuhlke (11) operates on unilateral anomalies on adults after due consideration relating primarily to the patient´s occupation. Ombredanne (9) was in favour of early surgical treatment of both unilateral and bilateral congenital aural anomalies. Gill, Jahrsdoerfer and Ombredanne (3, 6, 9), as followers of surgical treatment of unilateral aural anomalies, emphasise the significance of an improvement in directional hearing in the malformed ear, and the cosmetic and psychological importance of the cleared auditory foramen and the external auditory canal. Contraindications for surgical treatment of the ear with so-called congenital atresia are poor anatomical conditions, i.e.: 1. A small mastoid process devoid of pneumatization and a slit-like hypoplastic tympanic cavity, 2. Tympanic cavity situated behind the mandibulotemporal joint, 3. Lack of vestibular(oval) and cochlear (round) windows, 4. Anomalies of the inner ear, 5. Bad hearing or deafness in the other ear.
Material
Among 30 children with major developmental anomalies of the external and middle ears subjected to surgical treatment (37 ears) in the Department of Otolaryngology, 8 patients (6 boys and 2 girls) showed involvement of one side only. The motives for surgery are presented in Table 1.
Table 1. Motives for surgical treatment of unilateral developmental anomalies of the external auditory canal and the middle ear.
Case NoSexAgeMotives for operative procedure
1
2
3
4
5
6
7
8
M
F
M
M
M
M
F
M
14
7
12
13
16
16
12
8
Correction of cosmetic defect, lack of auditory canal. Improvement of hearing.
Correction of cosmetic defect.
Improvement of hearing.
Improvement of cosmetic appearance. Lack of acceptance in school environment. In addition - ginger-haired boy.
Principally correction of cosmetic defect. Improvement of hearing.
Improvement of hearing. Improvement of ear appearance.
Earache. Improvement of hearing.
Improvement of hearing, opposite ear deaf following mumps
Morphological changes revealed at operation are shown in Table 2.
Table 2. Morphological changes in ears with developmental anomalies of the external auditory canal and middle ear. Intra-operative state.
Case NoSexAgeSideExternal auditory canalState of auditory ossicles Malleus, incus StapesNotes
1M14RAbsent. Atresia plate 2 cm thickMalleus-thick handle. Incudomalleoral joint accreted to atresia plateNormal 
2F7LAbsent. Atresia plate 15 mm thickWide handle of malleus. Long crus of incus bentNormal 
3M12LStenosis of osseous part. Small tympanic membrane.Deformed and accreted to lateral tympanic cavity wall.Small 
4M13LAbsent. Atresia plate 15 mm thickMalleoincus formedNormal 
5M16LAbsent. Atresia plate 20 mm thickMalleoincus formedNormal 
6M16RAbsent. Atresia plate 20 mm thickMalleoincus formedNormal 
7F12RNarrowed. Atresia plate 1 mm thickHandle of malleus sunk into atresia plate.Normal 
8M9RAbsent. Atresia plate 20 mm thickMalleoincus formedNormal Healthy ear deaf following mumps.
Results
A good anatomical effect (a wide external auditory canal with signs of epidermization), was obtained in 7 patients; including two following twofold operations. In one female patient restenosis of the canal developed, but she did not present herself for re-operation. A conversational hearing level was gained in 5 patients. The state of hearing was assessed using audiometry after 3 months and after 1 year. The largest gain in hearing was 40 dB. Six patients who report steadily for check-ups are satisfied with the postoperative effects, and their well-being has improved markedly. Patient No 6, a student at present, wears tied hair, and has exposed the operated ear despite a marked deformity of its concha. He benefits from this ear just as well as from his healthy one. Patient No 8 is also worthy of notice. This boy of 9 developed profound hearing impairment in the healthy ear following mumps. The developmental anomaly of the opposite ear was markedly pronounced. The underdeveloped ear concha was displaced forward, with a missing tympanic part of the temporal bone and with an atresia plate 20 mm thick. During a single-stage procedure the deformed concha was translocated and a wide external auditory canal was created by a transmastoid approach. The gain in hearing improvement has allowed the boy to attend school without a hearing aid.
It seems that despite the invasive method of treatment used, an individual approach to each case makes it possible to achieve good postoperative results to the satisfaction of the patients, their parents, and the attending medical team.
Piśmiennictwo
1. Bellucci R.J.:The problem of congenital auricular malformation. Trans. Am. Acad. Ophthalmol. Otolaryngol.,1960, 840. 2. CrabtreeJ.A.: Tympanoplastic Techniques in Congenital Atresia. Arch. Otolaryngol., 1968, 88:1-63. 3. Gill N.W.: Congenital atresia of the ear. A review of the surgical findings in 83 cases. J. Laryngol. Otol., 1969, 83:6-551. 4. Glasscock M.E., Schwaber M.K.: Management of congenital ear malformations. Ann. Otol. Rhinol. Laryngol., 1983, 92:5-504. 5. House H.P.: Management of congenital ear canal atresia. Laryngoscope, 1953, 63:916. 6. Jahrsdoerfer R.A.: Congenital atresia of the ear. Laryngoscope, l978, 88, 9, Suppl. l3:1-48. 7. Livingstone G.: The establishment of sound conduction in congenital deformities of the external ear. J. Laryngol. Otol.,1959, 73:231. 8. Ombredanne M.: Aplasies de 1´oreille dans les syndromes de Franceschetti. Ann. Otolaryngol. Chir. Cervicofac., 1970, 87:6-309. 9. Weerda H. et al.: Gehorverbesserer Operationen bei Ohrmuschel-missbildungen. HN0, 1985, 33:10-449. 10. Zuhlke D.: Chirurgische Behandlung der Missbildungen des Ohres /exklusiv Ohrmuschel/. rch. Klin. Exp. Ohren. Nasen. Kehlkopfheilkd, 1972, 202:l-153.
New Medicine 3/1999
Strona internetowa czasopisma New Medicine

Pozostałe artykuły z numeru 3/1999: