auxiliary ear
Introduction
Introduction The auricle is also called the ear, commonly known as the small ear. It is caused by the abnormal development of the first zygomatic arch. Usually, there are different types of twin tissues in the front and the corner of the tragus. There are often several cartilage tissues in the tissue. The surface of the skin is sometimes colored, and the accessory ear is completely redundant, which has nothing to do with functions such as hearing. The skin color is normal, the skin is protuberance, the size and number of forms are diverse, the cartilage can be touched inside, and some of them resemble small auricles. Such cases are often accompanied by other maxillofacial deformities.
Cause
Cause
The accessory ear originates from the auricular nodules or the soft tissue surrounding the 2nd, 3rd, and 4th cleft palate due to abnormal development. Many patients are sporadic, but some families may be irregularly dominant. Mainly during the pregnancy to use drugs. There are also some fetal malformations caused by radiation. In general, many amino sugar drugs can cause teratogenicity during pregnancy, and it is best to pay attention to prevention.
Examine
an examination
1. Histopathological examination. Taking the deformed part of the tissue for pathological section, the pathological changes of the lesion can be further clarified, and the deformity caused by the tumor can be excluded.
2. Examination of chromosomes. Most of the patients with this symptom are normal, but there are also a few that are not obvious.
Diagnosis
Differential diagnosis
Differential diagnosis of the accessory ear:
1. Skin dermatosis: Skin dermis refers to a soft-skinned growth organism that adheres to the surface of the skin through a fine pedicle-like tissue. Its medical name is called soft cocoon, and skin sputum is not a skin cancer or a skin cancer. Typical skin lice are a characteristic of age and are particularly common among older people over the age of 60, more common in women, tend to be familial, and are common after pregnancy.
2. The tough mass in the lower ear area: it is a kind of parotid gland tumor containing parotid tissue, mucus and cartilage-like tissue, so it is called "mixed tumor". Mucus and cartilage-like tissue are metamorphosed by glandular tissue. The outer layer of the tumor is a very thin envelope that is formed by deformation of the parotid gland after compression and is not a true envelope.
