Great questions about lentigo maligna melanoma (LMM)! Let's break this down into the key areas you're asking about.
Monitoring vs. Treating Early-Stage (In Situ / Stage 0)
At stage 0, the cancer cells are only in the top layer of skin (epidermis) and haven't spread deeper. While monitoring might seem appealing, it's Show Full Answer
Great questions about lentigo maligna melanoma (LMM)! Let's break this down into the key areas you're asking about.
Monitoring vs. Treating Early-Stage (In Situ / Stage 0)
At stage 0, the cancer cells are only in the top layer of skin (epidermis) and haven't spread deeper. While monitoring might seem appealing, it's generally not recommended as a long-term strategy. Here's why:
- LMM can slowly progress into invasive melanoma over time
- Early treatment has a nearly 100% five-year survival rate
- Waiting increases the risk of it spreading deeper, making treatment harder
That said, always discuss your specific situation with your dermatologist or oncologist — they know your case best. Surgery: Excision vs. Mohs
Both are valid options, but they serve slightly different purposes:
- Wide excision — removes the lesion plus a margin (5–10mm) of healthy skin around it. This is the most common approach
- Mohs surgery — removes the melanoma layer by layer, checking each layer under a microscope before continuing. This is often preferred for facial LMM because it preserves as much healthy tissue as possible
For cosmetic outcomes, Mohs is generally preferred for facial lesions due to its precision. Staged Excision / Mapped Surgery
You mentioned "conceptual mapping" — this likely refers to staged excision with margin mapping (sometimes called "slow Mohs"). This technique:
- Maps out the borders of the lesion before surgery
- Removes tissue in stages, checking margins carefully
- Is particularly useful for LMM on the face where cosmetic preservation matters
This approach is considered one of the best options for balancing complete removal with cosmetic results. Definitely worth discussing with a dermatologic surgeon who specializes in melanoma.
September 3