Simultaneous occurrence of melanocytic nevus and melanotic macule in the vermilion of the lower lip ScienceDirect Melanotic Macules, Naevi, and Melanoma Springer Nature Link Melanotic Macules, Naevi, and Melanoma Springer Nature Link Dark Black Spot on Lip Dermatologist in Roorkee 4 Causes of Black Spot on Lower Lip, Says Doctor Scary Symptoms Oral melanotic macule and primary oral malignant melanoma: Epidemiology, location involved, and clinical implications Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontics