In addition to the common types of melanoma, we can identify rare variants of melanoma of medical interest; these are:
- Nevoid melanoma
- Signet ring melanoma
- Myxoid melanoma
- Rhabdoid melanoma
- Primary melanoma of the mucous membranes
- Melanoma on blue nevus
- Congenital or infantile melanoma
All these rare variants of melanoma present characterizing features of considerable medical interest.