A mole on Gray Tal's right hand
Abraham Lincoln's distinguished mole
A mole or melanocytic nevus was a type of lesion that contained nevus cells.
One of Roberta Lincoln's birthmarks took the form of a small mole on her left shoulder. (TOS: "Assignment: Earth")
Seska had a little mole on her stomach. In 2372, Chakotay goaded Maje Cullah by expressing his fondness for it. (VOY: "Maneuvers")
Gray Tal used to hate a mole on his hand until he came to terms with it, with "bigger things to think about." When designing a synthetic body for his reincorporation, Gray asked Doctor Hugh Culber to remove the mole. (DIS: "Anomaly (DIS)")
Carol Freeman asked her daughter Beckett Mariner to look at a weird mole somewhere on her body, which Mariner mentioned a week later to try and prove she was really herself. (LD: "Dos Cerritos")