Sebaceous gland cyst is commonly known as "powder tumor", which refers to the cyst formed by sebaceous gland accumulation after sebaceous gland duct obstruction.

This is the most common benign tumor of the skin. Many people have had the experience of long powder tumor, especially the young people in the vigorous growth period. It often occurs on the head, face, back (personally, it is the most common) or buttocks of adults. Growth is slow, but asymptomatic, and there may be redness, swelling, heat and pain when complicated with infection. The cyst is round with clear boundary, and its base can be pushed and adhered to the skin. Black hair follicle holes can be seen in the center, and white sebum flows out after squeezing or bursting, which can identify lipomas and so on.

Sebaceous gland cysts are often complicated with infection, which causes the cyst to rupture and temporarily subside, but it will form scars and is easy to recur. The chance of sebaceous cyst canceration is extremely rare. Surgery is the only treatment for sebaceous cyst. If there are inflammatory manifestations such as redness, swelling, heat and pain before operation, we should first control the inflammation and then operate.

2. Lipoma

Lipoma is a benign tumor originating from adipose tissue. There is a thin connective tissue cyst around the tumor, which contains normal fat cells divided into lobular groups by connective tissue bundles. Some lipomas contain more connective tissues or blood vessels in addition to a large amount of adipose tissue in structure, that is, complex lipomas are formed.

This kind of tumor usually occurs in the shoulders, back, buttocks and inner thighs, and the head is also common. Single shot, round, soft, clear edge, easy to push. People with unclear boundaries should beware of the possibility of malignant lipoma. < P > Patients with small lipomas, slow development and no clinical symptoms generally do not need to be treated. If you grow very big, feel pain or affect your appearance, you can consider surgical resection. (If lesbians love beauty, they can ask the doctor for intradermal suture, and the scar can be smaller, but according to your specific situation, so as to avoid poor drainage)

Third, hemangioma

1. Capillary hemangioma

is more common in infants, usually at birth, and can occur in all parts of the body, especially in the head and face. Tumors are bright red or purplish red, with different sizes, irregular shapes and clear boundaries. They are not higher than the skin, but sometimes they can be velvet-like. Surgical resection or liquid nitrogen freezing and X-ray external irradiation can be used.

2. Cavernous hemangioma

mostly occurs in the skin or submucosa, often single, dark red or purplish red, with unclear boundary, softness, compressibility and expansibility. 5% sodium morrhuate or 4% urea can be injected into the tumor or frozen with liquid nitrogen and treated by surgery.

3. The hemangioma

is wormlike, the skin is purplish red, and there is arterial pulsation. If the surrounding arterioles are compressed, the pulsation disappears, and vascular murmurs can sometimes be heard during auscultation. The mass is soft in texture, and sometimes the induration is caused by thrombus or perivascular inflammation, which has obvious compressibility and expansibility. Surgical resection is possible, but angiography should be done before operation to estimate the scope and size of the operation.

IV. Acute abscess

The superficial abscess is characterized by local redness, swelling, pain and tenderness, with a sense of fluctuation. Deep abscess is local diffuse swelling, pain and tenderness with no obvious fluctuation. Incision and drainage should be done in time, and antibacterial and anti-inflammatory drugs should be used for treatment.