The most common benign skin tumors explain the appearance, causes and treatment of atheroma in detail

“It’s been a while since I touched this one under my armpit! It was originally small,” Meng Xin told the doctor, “but recently I suddenly felt pain. When I saw it, it became bigger and red. Is this a lymph node outgrowth? The question is, do I have cancer?”

The doctor examined Meng Xin and told her, “This is not a lymph node, but an inflamed lymph node.Atheroma, we may have to do a drainage first. “

Meng Xin was still quite nervous and didn’t quite understand what an atheroma was.

◆ What is atheroma?

Atheroma is a very popular term. More academically, we will call it “epidermoid cyst”, and some people call it sebaceous cyst (but we will explain why this term is inappropriate later).

Epidermoid cyst can be said to be the most common benign skin tumor, and it often grows for a long time, very slowly, even for several years, it seems that there is not much change, it is especially common in the face, neck, trunk, etc., basically Traces of atheromas may be found all over the upper body. The group that develops atheromas is usually young people in their 20s to 30s, and atheromas are rarely found before puberty. In terms of male-female ratio, males have a higher incidence of atheromas than females.

◆ Why do atheromas develop?

Epidermoid cysts arise from the infundibulum of the hair follicle. The infundibulum of the hair follicle is where the hair follicle opens on the surface of the skin. When the epidermis is repeatedly stimulated, rubbed, or wounded due to trauma and dryness, the epidermoid cells sneak deep into the funnel through the infundibulum, forming a cyst and forming a cyst. Lined by stratified squamous epithelium, the keratin produced by the squamous epithelium thus accumulates in the subepidermal layer or in the dermis, and the cyst communicates with the skin surface through keratin-filled outlets.

It’s a little hard to understand. In plain language, we can imagine an epidermoid cyst as a spherical pouch on the surface of the skin. The inner layer of the pouch will continue to secrete cutin to fill the pouch, and it is often seen where the pouch communicates with the surface of the skin. There will be a central dark opening in the middle like a blackhead.

Therefore, when we refer to atheroma or epidermoid cyst, it means that this is a subepidermal nodule full of horny, which is the result of blockage of the hair follicle orifice.

Also, acne and acne are not the same, please see ” What is the difference between acne and acne? What should I do? Doctors will answer “

◆ What are the characteristics of the appearance of atheroma?

Because epidermoid cysts are very common, when you find a bulging bump on your face, neck, or torso, you can first try to pinch the bump with your thumb and index finger. Between the index fingers, it represents nodules on the surface of the skin, and there is a high chance of epidermoid cysts.

The size of epidermoid cysts varies greatly, ranging from as small as 0.5 cm to as large as 3-5 cm. Usually there are no other symptoms other than a raised bump, however, epidermoid cysts may rupture, and when they rupture, you will see a thick gray discharge, or even a yellow creamy discharge like thick cheese , and it usually doesn’t smell good, with a putrid smell.

Here is why we should not call this a “sebaceous cyst”, because there is no sebaceous gland itself in the atheroma. Although there are also true sebaceous cysts, the cases of sebaceous cysts encountered clinically are much less than those of epidermoid cysts. Sebaceous cysts secrete an oily substance that lubricates the skin and hair, rather than a cheese-like secretion that contains many horny cells.

When epidermoid cyst is inflamed and infected, it will make people feel local pain, redness and swelling of the skin.

◆ Pain bumps, did I do something wrong?

The incidence of epidermoid cyst is very high, and most of them have the opportunity to grow epidermoid cyst without any special reason. Only a small number of patients with epidermoid cysts are related to body dominant genetic diseases, long-term sun exposure, or the use of immunosuppressants.

However, due to the pathogenic causes of epidermoid cysts, it is related to skin friction, trauma, and dryness. Usually, everyone should take care of their skin health to reduce skin damage caused by too dry and frequent scratching.

◆ How to confirm it is atheroma?

There are a lot of bumps on the skin, please see ” Growing when you get old? Are the bumps okay? Graphical analysis of benign skin tumors “, so what kind of bumps are on your body and face, it is best to seek medical attention Let a doctor see you.

When a doctor will make a clinical diagnosis based on the medical history and physical examination, and make a differential diagnosis from other skin nodules such as lipoma, milia, and acne, usually no imaging examination or blood test is required.

◆ Does atheroma need to be treated? How to deal with it?

If your atheroma has the following characteristics, it is best to discuss treatment with your doctor as soon as possible:

Scroll to Top