What does malignant melanoma in situ mean?
Melanoma in situ is also called stage 0 melanoma. It means there are cancer cells in the top layer of skin (the epidermis). The melanoma cells are all contained in the area in which they started to develop and have not grown into deeper layers of the skin. Some doctors call in situ cancers pre cancer.
Is melanoma in situ serious?
In situ melanomas don’t spread to other parts of the body or cause death, but if the tumor has an opportunity to grow even one millimeter deep into the skin, it can lead to more involved treatment and greater danger. If left untreated, it can metastasize and even become life-threatening.
Is melanoma in situ the same as Stage 1?
Stage I Melanoma This is a noninvasive stage, which is also called melanoma “in situ,” meaning “in its original place.” With stage I melanoma, the tumor’s thickness is 1mm or less. This tumor may or may not have ulcerated, and it isn’t yet believed to have spread beyond the original site.
Does melanoma in situ require surgery?
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.
Does all melanoma in situ become invasive?
It is thought that less than 5% of lentigo maligna and lentiginous melanoma transform into invasive melanoma. The risk of melanoma in situ evolving into invasive melanoma over time is greater in superficial spreading melanoma, acral lentiginous melanoma and other forms of melanoma, but the exact risk is unknown.
What is the treatment for melanoma in situ?
What is Stage 1 melanoma life expectancy?
Prognosis for Stage 1 Melanoma: With appropriate treatment, Stage I melanoma is highly curable. There is low risk for recurrence or metastasis. The 5-year survival rate as of 2018 for local melanoma, including Stage I, is 98.4%.