Diagnosis

Diagnosing Melanoma 

Are you wondering whether a mole or funny-looking spot of skin is melanoma? Melanomas usually look different from ordinary moles. The best way to find any suspicious moles on your body is to do a skin self-examination. Click here to print out a skin self-examination guide. 

 

If you notice a mole that looks unusual or that has grown or changed color or shape in the last few months, you should tell your doctor ASAP. If your doctor also thinks the mole looks suspicious, he or she will refer you to a dermatologist (a physician who specializes in diseases of the skin). The dermatologist may do a biopsy. The dermatologist will remove a small piece of the mole or the entire mole. A pathologist (another special doctor) then EXAMINES the sample under a microscope to check for cancer cells. 

 

• If the mole turns out to be melanoma, your dermatologist will need to find out more about the disease, based on:

• how thick the tumor is

• how far it may have spread

 

This process is called staging. Staging the melanoma is a very important step because the choice of treatment has a lot to do with the stage of the melanoma. 

 

To find out how thick the melanoma is, the dermatologist or a surgeon will remove the entire tumor along with some skin around it (if this wasn't already done during diagnosis). At the same time, or in a later step, the surgeon may do a procedure called a sentinel lymph node (SLN) biopsy. This will help your doctor find out whether, and where, the melanoma has spread. 

 

• Other tests may also play a role in staging. These will include

• blood tests

• chest x-rays  and possible one or more of

• CT (computed tomography)

• MRI (magnetic resonance imaging)

• PET scan (positron emission tomography scan)

 

After all traces of the tumor have been removed, you may see an oncologist, a cancer specialist. If the melanoma has spread to other areas or if there is a good chance the melanoma might come back, the oncologist may prescribe additional treatment.

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