No, squamous cell carcinoma (SCC) generally does not turn into melanoma because they originate from different skin cells (squamous cells vs. pigment cells/melanocytes), but having one type of skin cancer increases your risk for developing others, including melanoma, due to shared risk factors like extensive sun exposure. Both are serious skin cancers, and while SCC is a non-melanoma cancer, if left untreated, it can also become invasive and dangerous, similar to melanoma.
How to Tell If Squamous Cell Carcinoma Has Spread
Yes, when detected early and treated properly. Can squamous cell carcinoma turn into melanoma? No, they involve different types of cells.
Oral melanoma is a very rare malignancy that progresses rapidly and proves to be particularly aggressive. The clinical aspect of oral melanoma is varied. Still, it usually presents as a black-brown patch, macule, or nodular lesion with different shades of grey, red, purple, or areas of depigmentation.
Squamous cell carcinoma of the nose is a type of skin cancer characterized by the abnormal growth of squamous cells in the nasal region. It typically presents as a non-healing sore, scaly patch, or growth on the nose and can potentially spread to other parts of the body if left untreated.
Squamous cell carcinoma is less worrisome than melanoma but more worrisome than basal cell carcinoma. It typically arises on sun-exposed skin. It's more likely to spread to other parts of the body than basal cell carcinoma but isn't as invasive as melanoma.
Squamous Cell Carcinoma
SCC on the nose can be effectively treated with Mohs surgery, particularly if it is a recurrent or advanced lesion. If not treated early, SCC may require additional treatments, such as radiation therapy.
The melanoma of the mouth is a malignant neoplasm of melanocytes. It is a rare entity accounting for only 0.5% of melanomas. There is a male predominance, and the median age at diagnosis is 55–66 years. The most common mouth sites of melanoma are the palate and maxillary gingiva.
The 5 key signs of melanoma, often remembered by the ABCDEs, are Asymmetry (uneven halves), Border irregularity (jagged edges), uneven Color (multiple shades), Diameter larger than a pencil eraser (about 6mm), and Evolving (changing in size, shape, color, or symptoms like itching/bleeding). Also watch for a sore that doesn't heal, new dark streaks under nails, or unusual sensations like itching or pain in a mole.
Ultraviolet (UV) light is the most common cause of melanoma. It comes from the sun and is used in sunbeds. Melanoma is more common in older people, but younger people can also get it.
Squamous cell carcinomas appear as red scaly patches, scaly bumps, or open sores. Left alone, they become larger and destroy tissue on the skin. They can also spread to other areas of the body.
Melanoma survivors had increased risk of developing several cancers; the most common cancers with elevated risks were breast, prostate, and non-Hodgkin lymphoma (O:E=1.10, 1.15, and 1.25, respectively).
Mohs surgery is considered the most effective technique for treating many basal cell carcinomas (BCCs) and squamous cell carcinomas (SCCs), the two most common types of skin cancer. Sometimes called Mohs micrographic surgery, the procedure is done in stages, including lab work, while the patient waits.
Signs and symptoms of squamous cell skin cancer
They can also develop in scars or skin sores elsewhere. These cancers can appear as: Rough or scaly red (or darker) patches, which might crust or bleed. Raised growths or lumps, sometimes with a lower area in the center.
Treatment overview
In July 2021, the FDA expanded this approval to include SCC that is locally advanced and not curable by radiation or surgery. In 2024, the FDA approved cosibelimab-ipdl (UnloxcytTM) for adults with locally advanced or metastatic squamous cell carcinoma that is not curable with surgery or radiation.
Treatment should happen as soon as possible after diagnosis, since more advanced SCCs of the skin are more difficult to treat and can become dangerous, spreading to local lymph nodes, distant tissues and organs.
The most important warning sign of melanoma is a new spot on the skin or a spot that is changing in size, shape, or color. Another important sign is a spot that looks different from all of the other spots on your skin. (This is sometimes known as "the ugly duckling sign.")
Melanomas most often develop in areas that have had exposure to the sun. This includes the arms, back, face and legs. Melanomas also can happen in areas that aren't as exposed to the sun. This includes the soles of the feet, palms of the hands and fingernail beds.
Common symptoms of melanoma include:
A new or unusual mole, blemish, or sore. A spot that looks different from others on your skin ("the ugly duckling") Changes in the size, shape, or color of a mole. Itching, tenderness, or pain in a mole or lesion.
Melanoma is cancer that develops in melanocytes, cells that produce melanin (pigment that produces color in the eyes, hair and skin). Although melanoma usually grows on the skin, it can also grow in mucosal membranes. This moist tissue lines cavities inside the body, such as the mouth, nose, sinuses and pelvic organs.
Five-Year Survival Rate by Melanoma Stage:
Localized melanoma: Stage 0, Stage I, and Stage II: 98.4% Regional melanoma: Stage III: 63.6% Metastatic melanoma: Stage IV: 22.5%
OSCC can affect any site of the oral mucosa and large lesions can invade several continuous areas. The present results showed that the border of tongue, gingiva/alveolar mucosa and floor of mouth/ventral tongue were the most commonly affected locations.
UV radiation from the sun increases the risk of squamous cell carcinoma of the skin. Covering the skin with clothes or sunblock can help lower the risk. Using tanning beds. People who use indoor tanning beds have an increased risk of squamous cell carcinoma of the skin.
Chemotherapy. Chemotherapy uses strong medicines to kill cancer cells. If squamous cell carcinoma spreads to the lymph nodes or other parts of the body, chemotherapy can be used alone or with other treatments, such as targeted therapy and radiation therapy.
Location on the Body
Squamous cell carcinomas that develop on high-risk areas of the body tend to behave more aggressively. These areas include the ears, lips, nose, scalp, fingers, and genitals, as well as sites where the skin is already damaged by chronic inflammation, burns, or scars.