What Is Basaloid Squamous Cell Carcinoma?
Basal squamous cell carcinoma refers to the components of squamous cell carcinoma (squamous cell carcinoma) in basal cell carcinoma, which accounts for 10% to 20% of basal cell carcinoma and grows faster. This disease is relatively rare in clinical practice.
Basal squamous cell carcinoma
- Chinese name
- Basal squamous cell carcinoma
- People group
- Happens in the elderly
- More common in
- Long-term sun exposure for outdoor work
- body parts
- Eyes, nose, nasolabial folds
- Basal squamous cell carcinoma refers to the components of squamous cell carcinoma (squamous cell carcinoma) in basal cell carcinoma, which accounts for 10% to 20% of basal cell carcinoma and grows faster. This disease is relatively rare in clinical practice.
- The disease mainly occurs in the elderly, more common in people over 50 years of age, and rarely in people under 30 years of age. The incidence is basically the same for both sexes. It is more common in people who work outdoors for a long time with sun exposure. It is more common in exposed parts of the body, especially the face. It is more common in the eyes, nose, nasolabial folds, and cheeks, but not in exposed parts. Its damage is mostly superficial rash. In the early days, it was a round patch with bright pearly ridges on the surface. The epidermis was thin, and a few dilated capillaries were often seen. If you observe carefully, small freckled black spots are still visible. It can also appear as reddish pearly lichen pimples or plaques. The surface is slightly keratinized or accompanied by small, superficial erosions, scabs, or superficial ulcers. Mature damage can usually be divided into the following types.
- (A) Nodular ulcer type This type is more common, the damage is generally single, soybean size, light brown or grayish white translucent, hard, the surface often has a few dilated capillaries, easy bleeding after minor trauma. Nodules usually grow slowly, with a central depression, often forming erosions or ulcers. The base of the ulcer is granular or granulated, easy to bleed and covered with serous secretions or brown crusts, so the typical skin lesion is a slowly expanding ulcer around the edge of the pearl-like bulge, showing a waxy or pearl-like appearance. Small nodules, uneven and rolled inward, are called erosive ulcers. The ulcers break apart from time to time, and invade to the surrounding or deep, the edge can continue to expand. In severe cases, the local soft tissues and bones are destroyed, causing destruction.
- (II) The difference between the pigmented type and the nodular ulcer type is the dark brown pigmentation of the skin lesions, ranging from gray-brown to dark black, but uneven, the edge part is deep, and the central part is dotted or reticulated, sometimes easy to misdiagnose for
- This disease often needs to be distinguished from the following diseases: keratinized basal cell tumors, although there are keratinized beads and even keratinous cysts, but the keratinized area does not have the form of squamous cell carcinoma. Basal cells are squamous metaplasia, squamous cells have no atypia. A mixed tumor of basal cell tumor and squamous cell carcinoma is a mixture of the two rather than two components of a tumor. The clinical manifestation of this mixed tumor is the same as that of squamous cell carcinoma.