ORAL MELANOTIC MACULE (OMM) (Also called focal melanosis labial melanotic macule) A benign, localized, flat pigmented lesion of the oral mucosa Caused by a focal increase in melanin production Definition of melanocytic macules associated with Peutz Jeghers syndrome NCI Dictionary of Genetics Terms NCI a Melanotic macule at the wetdry line of the lower lip. b Melanotic Download Scientific Diagram Labial melanotic macule A collection of resources for RACGP exams Next Gen GP Text Book live webinars AKT and KFP questions