Dr. Ertan Beyatlı

What is Sebase Adenoma?

(Update: ) - Skin and soft tissue diseases

Sebase Adenomaare benign lesions that occur on the skin and contain keratin (oily, white and cheesy material).

Sebase Adenoma It is commonly known as epidermal or epidermoid cyst (because it originates from the epidermis) and pilar cyst or trichilemmal cyst (because it originates from the hair follicle). However, by definition, neither epidermoid cyst nor pilar cyst is considered a sebaceous cyst because these cysts contain keratin, not sebum.

Sebaceous Cyst

In addition, when examined under a microscope, the sebaceous gland is not found in epidermoid and / or pilar cysts. In practice, all three terms are often used interchangeably.

True sebaceous cysts are very rare and steatocystomas (steatocystoma multiplex) is known by name.

What is Keratin?

Keratin is the type of protein that makes up your hair, skin, and nails. Keratin can also be found in your internal organs and glands. Keratin is a protective, fibrous and structural protein that is less prone to scratching or tearing. Specifically, these proteins are only produced by chords (vertebrates, Amphioxus, and urocorids), which include mammals, birds, fish, reptiles, and amphibians.

Causes of Sebaceous Adenoma

The following conditions can cause Sebaceous cysts and adenomas to form:

  • Sebaceous gland blockage,
  • infection and inflammation of the hair follicle
  • excess testosterone hormone level
  • Some hereditary diseases: Gardner's syndrome, basal cell nevus syndrome

Where is it seen?

Infected sebaceous cyst behind the earlobe
Infected sebaceous cyst behind the earlobe

It is usually seen on the scalp, ears, neck, face and arms.

In fact, Sebaceous Adenomas can be seen in every part of the body except the palms (palm) and soles (plantar). Especially in men, it is seen in the chest and scrotum (hayas). Sebase Adenoma and cysts are more common in areas with dense hair and hair in general.

Physical properties

Sebaceous adenoma removed (excised) under local anesthesia and sebum, which is an oily, white and cheesy material.
Local anesthesia the underlying (excised) sebaceous adenoma and the oily, white and cheesy material sebum

It usually occurs as round and soft lesions of different sizes with smooth borders. Inflamed lesions can be hard and painful. Sebaceous Adenomas are usually mobile and include:

  • Fibrous tissue and fluid
  • Keratin is an oily substance with the consistency of cottage cheese, so it is sometimes called keratin cyst. The most important feature of this substance is that it has a cheesy or food smell.
  • Slightly sticky, fluid, serosanguineous, purulent and bloody content.

Sebase Adenoma treatment

Single treatment for Sebaceous cysts / Adenomas local anesthesia surgical removal under (Excisional Biopsy).

The removed material is sent for histopathological examination in the form of a biopsy. There is no chance of recurrence in lesions that are successfully completely excised.

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