Ear Malformations: Surgical Considerations

2008 ◽  
Vol 139 (2_suppl) ◽  
pp. P64-P64
Author(s):  
Gosta Granstrom ◽  
Joachim Salen ◽  
Katharina Schubertsson
Keyword(s):  
Middle Ear ◽  
Surgical Techniques ◽  
University Hospital ◽  
Ear Reconstruction ◽  
External Ear ◽  
Ear Canal ◽  
Ear Malformations ◽  
Autogenous Reconstruction ◽  
Middle Ear Reconstruction ◽  
High Degree

Objective Therapy of ear malformations has changed considerably the last two decades when new surgical techniques are available. This study aimed to evaluate different approaches to improve hearing and esthetics in ear malformations. Methods All patients who underwent rehabilitation for ear malformations between 1960 and 2007 at a University Hospital were investigated. Patients underwent clinical, audiological and x-ray examinations. Attempts to improve hearing were undertaken by ear canal and middle ear reconstruction, and/or bone anchored hearing aid (BAHA). Attempts to improve esthetics of the external ear were undertaken by autogenous reconstruction (AR) and bone anchored episthesis (BAE). Results There were 211 patients (117 male, 94 female) with ear malformations representing 255 ears. 103 of these were syndromic patients. The degree of ear malformation was generally severe, Meurman stage 3 (external ear) and Altman Creemers stage 2B (middle ear). AR (n=64) was successful to a higher degree in milder malformations (93% for Meurman grade 1, 18% for Meurman grade 3). BAE (n=109) was successful to a high degree independent of Meurman degree (92–100%). A mean of 17 dB closure of air-bone gap was obtained by ear canal and middle ear reconstruction (n=111). A mean of 46 dB closure of air-bone gap for BAHA was obtained (n=106). Conclusions With the high degree of success for BAE, this option is valuable for children where AR has failed. With the high degree of success for BAHA, children can be supplied with BAHA early and middle ear reconstruction postponed until adolescence.

Squamous Epithelium in the Middle Ear and Sinus

1994 ◽  
Vol 73 (1) ◽  
pp. 47-48
Author(s):  
Alper Tutkun ◽  
Caglar Batman ◽  
Cüneyt Üneri ◽  
Mehmet Ali Sehitoglu
Keyword(s):  
Middle Ear ◽  
Statistical Difference ◽  
Squamous Epithelium ◽  
Normal Skin ◽  
University Hospital ◽  
Control Group ◽  
Study Group ◽  
External Ear ◽  
Ear Canal ◽  
Superior Part

This study has been performed between December 1990—March 1991 in the Microsurgery laboratory of the Marmara University Hospital. Twelve healthy albino guinea pigs were used as a study group while the control group consists of three animals. The potentials for cholesteatoma formation of the squamous epithelium, namely the squamous epithelium of the posterior superior part of the external ear canal skin and normal skin, were investigated. Among 24 subjects who were implanted by canal skin, cholesteatoma was fanned in 21 of them. Likewise, 19 of 24 animals implanted by normal skin came out with cholesteatoma formation. Between these two types of epithelium, there is no statistical difference in cholesteatoma formation (p >0.5).

Ear Malformation and Hearing Loss in Patients with Treacher Collins Syndrome

1993 ◽  
Vol 30 (1) ◽  
pp. 97-103 ◽  
Author(s):  
Gaylene Pron ◽  
Cheryl Galloway ◽  
Derek Armstrong ◽  
Jeffrey Posnick
Keyword(s):  
Hearing Loss ◽  
Inner Ear ◽  
Middle Ear ◽  
Conductive Hearing Loss ◽  
Treacher Collins Syndrome ◽  
External Ear ◽  
Ear Canal ◽  
Ear Malformations ◽  
Asymmetric Hearing Loss ◽  
Conductive Hearing

Although the hearing loss of patients with Treacher Collins syndrome is well documented, few studies have reported jointly on their hearing loss and ear pathology. This paper reports on the hearing loss and computerized tomography (CT) assessments of ear malformations in a large pediatric series of patients with Treacher Collins. Of the 29 subjects assessed by the Craniofacial Program between 1986 and 1990, paired audiologic and complete CT assessments were available for 23 subjects. The external ear canal abnormalities were largely symmetric, either bilaterally stenotic or atretic. In most cases, the middle ear cavity was bilaterally hypoplastic and dysmorphic, and ossicles were symmetrically dysmorphic or missing. Inner ear structures were normal in all patients. The majority of patients had a unilateral or bilateral moderate or greater degree of hearing loss and almost half had an asymmetric hearing loss. The hearing loss of all subjects was conductive, except for three whose loss was bilateral mixed. Two types of bilaterally symmetric hearing loss configurations, flat and reverse sloping, were noted. Conductive hearing loss in patients with Treacher Collins is mainly attributable to their middle ear malformations, which are similar for those of patients with malformed or missing ossicles.

Problems in Alloplastic Middle Ear Reconstruction

1992 ◽  
Vol 112 (2) ◽  
pp. 322-327 ◽  
Author(s):  
A. W. Blayney ◽  
K. R. Williams ◽  
J.-P. Erre ◽  
T. H. J. Lesser ◽  
M. Portmann
Keyword(s):  
Middle Ear ◽  
Ear Reconstruction ◽  
Middle Ear Reconstruction

Microtia Repair

2019 ◽  
pp. 461-470
Author(s):  
Melissa Kanack ◽  
Catherine Tsai ◽  
Amanda Gosman
Keyword(s):  
Skin Graft ◽  
Costal Cartilage ◽  
Ear Reconstruction ◽  
External Ear ◽  
Cartilage Graft ◽  
Associated Anomalies ◽  
Ear Canal ◽  
Genetic Syndrome ◽  
Definition Of ◽  
Costal Cartilage Graft

Microtia may occur as an isolated finding or in conjunction with other associated anomalies or a genetic syndrome. Ear reconstruction for these patients is typically performed no earlier than 6 years of age. In this chapter, a staged autogenous method of ear reconstruction is described using costal cartilage. In the first stage, a costal cartilage graft is harvested and placed. The next stages involve lobule transposition, detachment of the auricle with placement of a posterior skin graft, and further refinement of the external ear landmarks with tragus creation and definition of the conchal bowl and ear canal.

scholarly journals Macroscopic description of the external and middle ear of paca (Cuniculus paca Linnaeus, 1766)

2015 ◽  
Vol 35 (6) ◽  
pp. 583-589 ◽  
Author(s):  
Leandro L. Martins ◽  
Ijanete Almeida-Silva ◽  
Maria Rossato ◽  
Adriana A.B. Murashima ◽  
Miguel A. Hyppolito ◽  
...  
Keyword(s):  
Tympanic Membrane ◽  
Middle Ear ◽  
Gross Anatomy ◽  
Experimental Models ◽  
Temporal Region ◽  
External Ear ◽  
Wild Animals ◽  
Ear Canal ◽  
Macroscopic Description ◽  
Mouse Ear

Abstract: Paca (Cuniculus paca), one of the largest rodents of the Brazilian fauna, has inherent characteristics of its species which can conribute as a new option for animal experimantation. As there is a growing demand for suitable experimental models in audiologic and otologic surgical research, the gross anatomy and ultrastructural ear of this rodent have been analyzed and described in detail. Fifteen adult pacas from the Wild Animals Sector herd of Faculdade de Ciências Agrárias e Veterinárias, Unesp-Jaboticabal, were used in this study. After anesthesia and euthanasia, we evaluated the entire composition of the external ear, registering and ddescribing the details; the temporal region was often dissected for a better view and detailing of the tympanic bulla which was removed and opened to expose the ear structures analyzed mascroscopically and ultrastructurally. The ear pinna has a triangular and concave shape with irregular ridges and sharp apex. The external auditory canal is winding in its path to the tympanic mebrane. The tympanic bulla is is on the back-bottom of the skull. The middle ear is formed by a cavity region filled with bone and membranous structures bounded by the tympanic membrane and the oval and round windows. The tympanic membrane is flat and seals the ear canal. The anatomy of the paca ear is similar to the guinea pig and from the viewpoint of experimental model has major advantages compared with the mouse ear.

Side-Hole Suction for Ear Surgery

1979 ◽  
Vol 87 (1) ◽  
pp. 87-88 ◽  
Author(s):  
N. Wendell Todd
Keyword(s):  
Soft Tissue ◽  
Middle Ear ◽  
Surgical Trauma ◽  
External Ear ◽  
Ear Canal ◽  
Ear Surgery ◽  
Graft Placement ◽  
Side Hole ◽  
External Ear Canal

Surgical trauma to the soft tissue of the external ear canal and middle ear increases inflammation and scarring. A side-hole suction tip has been found to minimize suction-tip trauma, preclude the need to aspirate through synthetic sponge or cotton, and facilitate graft placement.

scholarly journals External ear canal cholesteatoma after ventilation tube insertion and mastoidectomy

2012 ◽  
Vol 69 (4) ◽  
pp. 363-366 ◽  
Author(s):  
Dragoslava Djeric ◽  
Milan Jovanovic ◽  
Ivan Baljosevic ◽  
Srbislav Blazic ◽  
Milanko Milojevic
Keyword(s):  
Tympanic Membrane ◽  
Middle Ear ◽  
Membrane Surface ◽  
Tube Placement ◽  
External Ear ◽  
Ventilation Tube ◽  
Ear Canal ◽  
Tube Insertion ◽  
Tissue Mass ◽  
External Ear Canal

Introduction. Etiopathogenetically, there are two types of chollesteatomas: congenital, and acquired. Numerous theories in the literature try to explain the nature of the disease, however, the question about cholesteatomas remain still unanswered. The aim of the study was to present a case of external ear canal cholesteatoma (EEC) developed following microsurgery (ventilation tube insertion and mastoidectomy), as well as to point ant possible mechanisms if its development. Case report. A 16-yearold boy presented a 4-month sense of fullness in the ear and otalgia on the left side. A year before, mastoidectomy and posterior atticotomy were performed with ventilation tube placement due to acute purulent mastoiditis. Diagnosis was based on otoscopy examination, audiology and computed tomography (CT) findings. CT showed an obliterative soft-tissue mass completely filled the external ear canal with associated erosion of subjacent the bone. There were squamous epithelial links between the canal cholesteatoma and lateral tympanic membrane surface. They originated from the margins of tympanic membrane incision made for a ventilation tube (VT) insertion. The position of VT was good as well as the aeration of the middle ear cavity. The tympanic membrane was intact and of normal appearance without middle ear extension or mastoid involvement of cholesteatoma. Cholesteatoma and ventilation tube were both removed. The patient recovered without complications and shortly audiology revealed hearing improving. Follow-up 2 years later, however, showed no signs of the disease. Conclusion. There could be more than one potential delicate mechanism of developing EEC in the ear with VT insertion and mastoidectomy. It is necessary to perform routine otologic surveillance in all patients with tubes. Affected ear CT scan is very helpful in showing the extent of cholesteatoma and bony defects, which could not be assessed by otoscopic examination alone.

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