Should I be worried about melanoma in situ?

Is melanoma in situ really cancer?

Melanoma in situ is the very earliest stage of a skin cancer called melanoma. ‘In situ’ is Latin for ‘in space’. It means that the cancer cells have not had the opportunity to spread to anywhere else in the body.

How long does melanoma in situ take to spread?

The lesion can grow slowly for 5 to 15 years in the in situ form before becoming invasive. The exact percentage of lentigo maligna lesions that progress to invasive lentigo maligna melanoma is unknown but is estimated to be less than 30% to 50%.

What is the recurrence rate of melanoma in situ?

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). This is comparable to recent international studies (Table 1).

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.

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Is melanoma in situ malignant or benign?

Melanoma in situ is an early form of primary melanoma in which the malignant cells are confined to the tissue of origin, the epidermis. It is also known as in-situ melanoma and level 1 melanoma.

How common is melanoma in situ?

Estimates for 2016 in the United States were 76,380 new cases of invasive melanoma and 68,480 new cases of melanoma in situ. The incidence rate and death rate of melanoma have also increased significantly among Canadian men and women over the past 25 years.

Table 3.

Type % of cases
Acral lentiginous melanoma 2–3

Can nodular melanoma be benign?

The specificity for benign nodular melanocytic lesions was 70%. When the threshold was reduced with melanoma diagnosed at a score of 0 or more, 100% sensitivity for the diagnosis of both nodular and non-NM was achieved but with a relatively low specificity of 52.5% for benign nodular melanocytic lesions.

How do you get rid of melanoma in situ?

The standard treatment for Stage 0 melanoma (in situ) is surgery. The purpose of the surgery is to remove any cancer remaining after the biopsy. This procedure is called a wide local excision.

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.

What is the 5 year survival rate for stage 0 melanoma?

Stage 0: The 5-year relative survival rate is 97%. Stage I: The 5-year survival rate is 90-95%. If a sentinel node biopsy yields findings of melanoma in the lymph nodes, the 5-year survival is approximately 75%.

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Can I still sunbathe after melanoma?

Suncreen. If you’ve had melanoma, you should avoid spending too long in the sun. Your skin cancer specialist may suggest a high factor sunscreen such as 50 on any exposed skin. The higher SPF gives you extra protection but no sunscreen can provide 100% protection.