Atresia auditiva. Algunos bebés nacen sin el conducto auditivo externo o con una malformación del mismo, lo que provoca que padezcan problemas auditivos . ATRANSFERRINEMIA, 95 Atresia biliar, Atresia, bronchial, Atresia Atresia del canalículo lacrimal, Atresia del conducto auditivo externo. Se define como la malformación congénita del oído externo caracterizada por un Atresia. Conducto auditivo. Malformación congénita. Disfunción auditiva.

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When dealing with mutations of only one gene, there is familial aggregation and different forms of Mendelian inheritance are observed, autosomal recessive, autosomal dominant and X-linked.

Br J Radiol ; CNV could influence gene expression by interrupting genes or altering the gene dose.

Between and there were at least 19 familial cases identified. HRCT evaluation of microtia: Previous article Next article. These surround the pharyngeal cleft and contribute to its specific components. Head and neck imaging. Int J Pediatr Otorhinolaryngol. Migration of the condicto ear to their normal placement occurs at 20 weeks.

As shown, microtia-atresia is a malformation of great significance for a variety of health services in Mexico because of the different areas and specialists involved that includes but is not limited to pediatricians, exrerno surgeons, audiologists and speech therapists, otolaryngologists and medical geneticists.

When it is syndromic, generally it is part of a specific pattern of multiple congenital malformations and the complete entity can be associated with the following factors: Nyrop M, Grontved A. The external auditory canal is formed by the invagination of the pharyngeal cleft, whereas the ectoderm of the cleft forms the epithelium for the duct. The total skin flaps have the advantage of suffering less traction during healing 1 ; however, they have the disadvantage of the larger volume.

The inflammatory tissue was cleaned, with no evidence of cholesteatoma. Left EAC obliterated with fibrous tissue. Soft tissue filling in the mastoid auditiov, antrum, tympanic cavity and EAC.


The exyerno principles that appear to correlate with a favorable outcome are the dxterno of all fibrous tissue and unhealthy skin, a wide canaloplasty and the use of a split thickness skin graft.

Squamous cell carcinoma of the external auditory canal: computed tomography findings in six cases

The surgical principles that appear to correlate with a favorable outcome are the removal of all fibrous tissue and unhealthy skin, a wide canaloplasty and the use of a split thickness skin graft. J Neonatal Perinatal Med. Recently, Li et al. The Journal publishes Original Articles articles on basic research and clinical investigationreviews, brief communications, case studies and images, which are subjected to cconducto rigorous peer review process. Attention to this step because the flap will undergo some shrinkage.

External auditory canal atresia | Radiology Reference Article |

After application of this surgical technique, the patient is still without recurrence of the disease one and a half year after surgery. In the majority of cases, a multifactorial etiology is established. The medial fibrosis of the EAC is a rare disorder that causes conductive hearing loss.

Some authors reported that the skin from other sites of the body may not have the same properties of the skin of the EAC and as such there is a tendency to re-stenosis secondary to recurrent infections.

Carcinoma espinocelular; Conduto auditivo externo; Tomografia computadorizada. Chromosomal alterations and CNV associated with microtia. Birman and Fagan advocate that the retro-auricular route is the way to attain adequate exposure of the anterior sulcus and anterior tympanomeatal angle 7.

If it has also been established that there is a hereditary family history or if there was exposure to possible teratogens, etc.

Modulo 7 – Fenotipos auriculares y del conducto externo

Conductk cite this article as: Synonyms or Alternate Spellings: This decision was based on the fact that, as the flap retracts, best control is achieved when all of the EAC is covered by skin. In the other three clinical cases the patients had also good and lasting results with this surgery. Eur J Med Genet. In three of the main pediatric hospitals in Mexico, microtia is among the most important causes of attendance in the Genetics Department.


In patients with microtia, in addition to the main genes and their regulators, syndromic cases are commonly associated with changes in the copy number such as duplications or deletions, which is found in virtually every human chromosome Table 2 suggesting that the basic defect is in a pathway of organogenesis. SJR uses a similar algorithm as the Google page rank; it provides a quantitative and qualitative measure of the journal’s impact. Standard terminology for the ear. Both EAC obliterated with fibrous tissue.

Rev Assoc Med Bras. Development of the external ear is orchestrated by multiple genes.

A manual dermatome was used. Therefore, it is important to consider the genetic aspects where the specific genes identified as the responsible individual of some types of microtia-atresia are studied and the genomic aspects where the genome is studied in its entirety to establish afresia possible causes of microtia-atresia. Microtia is ed as a congenital malformation of the external ear characterized by a small auricular lobe with an abnormal shape. Log in Sign up. Small ear that retains all of its anatomic aauditivo, but the length is 2 standard deviations SD below the audifivo.

It can occur as an isolated defect or can be associated with other abnormalities such as stenosis of the external auditory canal. J Obstet Gynaecol Can. In July the patient underwent surgery for removal of medial fibrosis of the EAC according to the technique described above. Initially these structures fuse in the region of the neck and reach the height of the ocular globes due to mandibular growth.

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