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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Maximum malignant potential is in –
assistant
The correct answer is  Amongst the given options only junctional naevus has malignant potential.
Following melanocytic naevi can transform in to malignant malenoma

Malignant potential is maximum → congenital melanocytic naevus, and dysplastic (atypical) naevus.
Malignant potential is less (but present) → Junctional and compound nevus.