Squamous cell carcinoma of the skin most often occurs on sun-exposed skin, such as your scalp, the backs of your hands or your ears. But squamous cell carcinoma of the skin can occur anywhere on your body, including inside your mouth, on your anus and on your genitals.
Signs and symptoms of squamous cell carcinoma of the skin include:
- A firm, red nodule
- A flat sore with a scaly crust
- A new sore or raised area on an old scar or ulcer
- A rough, scaly patch on your lip that may evolve to an open sore
- A red sore or rough patch inside your mouth
- A red, raised patch or wart-like sore on or in the anus or on your genitals
When to see a doctor
Make an appointment with your doctor if you have a sore or scab that doesn't heal in about two months or a flat patch of scaly skin that won't go away.
Nov. 27, 2014
- Habif TP. Clinical Dermatology: A Color Guide to Diagnosis and Therapy. 5th ed. Edinburgh, U.K.; New York, N.Y.: Mosby Elsevier; 2010. http://www.clinicalkey.com. Accessed June 19, 2014.
- Goldsmith LA, et al., eds. Fitzpatrick's Dermatology in General Medicine. 8th ed. New York, N.Y.: The McGraw-Hill Companies; 2012. http://accessmedicine.mhmedical.com/book.aspx?bookid=392. Accessed Oct. 12, 2014.
- Skin cancer treatment (PDQ). National Cancer Institute. http://www.cancer.gov/cancertopics/pdq/treatment/skin/Patient. Accessed June 19, 2014.
- Skin cancer prevention. Centers for Disease Control and Prevention. http://www.cdc.gov/cancer/skin/basic_info/prevention.htm. Accessed June 19, 2014.
- Gibson LE (expert opinion). Mayo Clinic, Rochester, Minn. Nov. 13, 2014.
- Cook AJ. Decision Support System. Mayo Clinic, Rochester, Minn. July 7, 2014.
- Ferri FF. Ferri's Clinical Advisor 2015: 5 Books in 1. Philadelphia, Pa.: Mosby Elsevier; 2015. https://www.clinicalkey.com. Accessed June 19, 2014.
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