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A single lesion on the front part of the ear is usually the initial sign of pseudocyst of the auricle. Pseudocysts of the auricle appear as flesh-colored, nontender, noninflammatory cystic lesions and progress gradually over a 4- to 12-week period. Their diameters range from 1 to 5 cm. Usually, the lesions start off soft and get firmer with time.
Chondrodermatitis nodularis chronica helicis (CNCH) is a small, nodular, tender, chronic inflammatory lesion occurring on the helix of the ear, most often in men. [2]: 610 it often presents as a benign painful erythematous nodule fixed to the cartilage of the helix or antihelix of the external ear. [3]
A ceruminous adenoma is a benign glandular neoplasm which arises from the ceruminous glands located within the external auditory canal. These glands are found within the outer one third to one half of the external auditory canal, more common along the posterior surface; therefore, the tumor develops within a very specific location.
This category reflects the organization of International Statistical Classification of Diseases and Related Health Problems, 10th Revision. Generally, diseases outlined within the ICD-10 codes H60-H62 within Chapter VIII: Diseases of the ear and mastoid process should be included in this category.
The lesions presents as a nodule or papule, either sessile or pedunculated. They may be soft or have a cartilaginous structure. By histologic examination, it is a recapitulation of normal external auricle. There will be skin, cartilaginous structures, and cartilage (although the last is not seen in all variants of this disorder).
Neuroendocrine adenoma middle ear (NAME) is a tumor which arises from a specific anatomic site, the middle ear. [1] NAME is a benign glandular neoplasm of middle ear showing histologic and immunohistochemical neuroendocrine and mucin-secreting differentiation (biphasic or dual differentiation).
This is an uncommon lesion, usually affecting young patients (mean age, 30 years), with a male to female ratio of 2:1. The middle ear is involved, although it may extend to the external auditory canal if there is tympanic membrane perforation. [1] [2] [3]
Keratosis obturans is a relatively uncommon ear disease, where a dense plug of keratin, formed by abnormal accumulation of desquamated skin in sheet-like layers , forms in the bony (deeper) part of the external auditory canal. [1]