Melanomas are often larger than 6 mm (1/4 inch) in diameter. However, with increased awareness about early detection, about 30% of melanomas are found when they are less than 6 mm in diameter.

What is considered a small melanoma?

While it’s ideal to detect a melanoma when it is small, it’s a warning sign if a lesion is the size of a pencil eraser (about 6 mm, or ¼ inch in diameter) or larger. Some experts say it is also important to look for any lesion, no matter what size, that is darker than others.

Can melanomas be 3mm?

All melanomas have a diameter lower than 5 mm, with a mean of 3.7 mm (range 2.5–4.5 mm). According to naked eye examination only 2 of 8 melanomas had irregular borders, and 3 out of 8 were asymmetric and had multiple colors.

Does the size of melanoma matter?

The author presents a 2 mm melanoma in situ presenting as an insignificant pigmented lesion in a 60-year-old patient with no previous history of melanoma or multiple nevi—which is usually the norm in cases of small melanoma. This paper reiterates the fact that when it comes to a melanoma, size does not matter.

Can a 1 mm mole be cancerous?

Melanoma stages are described as: Stage 0 – the melanoma is on the surface of the skin. Stage 1A – the melanoma is less than 1mm thick. Stage 1B – the melanoma is 1mm to 2mm thick, or less than 1mm thick and the surface of the skin is broken (ulcerated) or its cells are dividing faster than usual.

Can melanoma be 2mm?

Stage 1B – the melanoma is 1mm to 2mm thick, or less than 1mm thick and the surface of the skin is broken (ulcerated) or its cells are dividing faster than usual. Stage 2A – the melanoma is 2mm to 4mm thick, or it’s 1mm to 2mm thick and ulcerated.

What does melanoma in situ mean?

(MEH-luh-NOH-muh in SY-too) Abnormal melanocytes (cells that make melanin, the pigment that gives skin its natural color) are found in the epidermis (outer layer of the skin). These abnormal melanocytes may become cancer and spread into nearby normal tissue. Also called stage 0 melanoma.

What is the normal size of a melanoma?

All melanomas have a diameter lower than 5 mm, with a mean of 3.7 mm (range 2.5–4.5 mm). According to naked eye examination only 2 of 8 melanomas had irregular borders, and 3 out of 8 were asymmetric and had multiple colors.

What are the treatment options for stage 0 melanoma?

Treating stage 0 melanoma. Stage 0 melanoma (melanoma in situ) has not grown deeper than the top layer of the skin (the epidermis). It is usually treated by surgery (wide excision) to remove the melanoma and a small margin of normal skin around it. The removed sample is then sent to a lab to be looked at with a microscope.

What is the margin of normal skin removal from melanoma?

The margin of normal skin removed depends on the thickness and location of the melanoma. Some doctors may recommend a sentinel lymph node biopsy, especially if the melanoma is stage IB or has other characteristics that make it more likely to have spread to the lymph nodes. You and your doctor should discuss this option.

What are the stages of tumour thickness in melanoma?

There are 6 main stages of tumour thickness in melanoma – Tis to T4. Tis means the melanoma cells are only in the very top layer of the skin surface. It is called melanoma in situ. T0 means no melanoma cells can be seen where the melanoma started (primary site). T1 means the melanoma is 1 mm thick or less.