Can superficial spreading melanoma be in situ?

Superficial spreading melanoma in situ is not dangerous; it only becomes potentially life threatening if an invasive melanoma develops within it. The rates of melanoma in situ are not reported by cancer registries.

What is an in situ melanoma?

Listen to pronunciation. (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.

Is melanoma in situ skin cancer?

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.

What does melanoma superficial spreading type mean?

Superficial spreading melanoma is a type of skin cancer that slowly grows horizontally across the top layer of skin before moving to the deeper layers. It’s the most common form of melanoma, accounting for 70 percent of all cases.

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Is superficial spreading melanoma the same as melanoma in situ?

Superficial spreading melanoma in situ is not dangerous; it only becomes potentially life threatening if an invasive melanoma develops within it. The rates of melanoma in situ are not reported by cancer registries.

How quickly should melanoma in situ be removed?

Hypothesis-based, informal guidelines recommend treatment within 4–6 weeks. In this study, median surgical intervals varied significantly between clinics and departments, but nearly all were within a 6-week frame. Key words: melanoma, surgical interval, treatment time, melanoma survival, time factors.

Does Stage 0 melanoma spread?

In Stage 0 melanoma, there is no evidence the cancer has spread to the lymph nodes or to distant sites (metastasis). Stage 0 is local melanoma, meaning it has not spread beyond the primary tumor. Another term for Stage 0 melanoma is in situ, which means “in place” in Latin.

Can Stage 0 melanoma come back?

Prognosis: Stage 0 melanoma, or melanoma in situ, is highly curable. There is very little risk for recurrence or metastasis. The 5-year survival rate as of 2018 for local melanoma, including Stage 0, is 98.4%.

Is early evolving melanoma in situ reportable?

Early or evolving melanoma in situ, or any other early or evolving melanoma, are reportable. All GIST tumors are reportable and classified as 8936/3 in ICD-O-3.2.

How do you treat melanoma in situ?

Melanoma in situ is treated by excision biopsy. A special tissue-sparing technique may be used for a large melanoma in situ, such as Mohs micrographic surgery or staged mapped excisions [2].

How often does melanoma in situ recur?

Location of primary melanoma in situ. The average histological excision margin was 3.7 mm (range, 0.2–14 mm). The rate of recurrence was 2.2% (9/410), with a mean time to recurrence of 29.6 months (range, 8–47 months).

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Can melanoma have no pigment?

Physicians refer to these as “amelanotic” melanomas, because they are conspicuously missing melanin, the dark pigment that gives most moles and melanomas their color. These unpigmented melanomas may be pinkish-looking, reddish, purple, normal skin color or essentially clear and colorless.

Can melanoma stay in situ forever?

Jim’s diagnosis of melanoma in situ meant that surgery was all he needed. While surgery on the face is never good news, our research has shown that patients with melanoma in situ have the same life expectancy as the general population.

How big is superficial spreading melanoma?

The average size of a superficial spreading melanoma is about 20 mm, or 2 cm, across. None of these characteristics make superficial spreading melanoma appear dramatically different from other types of melanoma when seen with the naked eye.

How common is superficial spreading melanoma?

Superficial spreading melanoma is the most common type of melanoma, accounting for around 70 percent of all cases. It starts growing along the top layer of the skin. Over time it penetrates deeper into the skin. This cancer can occur in adults of all ages.