Diagnosis of oral pigmentations and malignant transformations ScienceDirect A Rare Case of Oral Mucosal Pigmentation: Differential Diagnosis and Case Presentation JCDA Oral Melanotic Macule: Symptoms and Treatment Skinsight 56M with an asymptomatic, darkly pigmented lesion on the attached gingiva of the maxilla, an irregularly shaped macule with varied pigmentation, including shades of black, brown, and gray. Brendan Gallagher, DDS Pigmented Lesions of the Oral Mucosa Pocket Dentistry