From the Guidelines
It is generally rare for a long-standing belly button mole that has been present for over 13 years without changes to suddenly develop into melanoma. Melanomas typically develop from new moles or from existing moles that begin to change in appearance. Moles that have remained stable in size, shape, color, and texture for many years are less likely to be malignant. However, any mole, regardless of its location or how long it has been present, should be monitored for changes using the ABCDE rule: Asymmetry, Border irregularity, Color variation, Diameter larger than 6mm, and Evolution or changes over time. The belly button area can make self-examination challenging, so having a healthcare provider examine any concerning moles is important.
Key Points to Consider
- Risk factors that might increase concern include a family history of melanoma, previous sunburns, fair skin, or a large number of moles 1.
- If you notice any changes in a long-standing mole, such as itching, bleeding, crusting, or any of the ABCDE characteristics, you should have it evaluated by a dermatologist promptly.
- The USPSTF recommends that clinicians remain alert for skin lesions with malignant features noted in the context of physical examinations performed for other purposes, and that biopsy of suspicious lesions is warranted 1.
- Individuals at higher risk of melanoma, such as those with a previous primary melanoma or large numbers of moles, should be counselled about this risk and taught how to self-examine for changing naevi 1.
From the Research
Melanoma Development from Belly Button Moles
- There is limited research directly addressing the development of melanoma from belly button moles that have been present for over 13 years.
- The provided studies focus on the treatment and management of melanoma, including surgical approaches, adjuvant therapies, and immunotherapies 2, 3, 4, 5, 6.
- None of the studies specifically discuss the risk of melanoma development from long-standing belly button moles.
- However, it is known that melanoma can arise from pre-existing moles, and factors such as the presence of ulceration, cytokine levels, and disease stage can influence the risk of melanoma development 2, 3.
- The studies suggest that early detection and treatment of melanoma are crucial for improving outcomes, and that surgical management, adjuvant therapies, and immunotherapies can be effective in treating melanoma 3, 4, 6.
- Further research is needed to determine the specific risk of melanoma development from belly button moles that have been present for over 13 years.