{'fraction_non_alphanumeric': 0.028500619578686492, 'fraction_numerical': 0.0, 'mean_word_length': 5.1679389312977095, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Pigmented lesions of the oral cavity – A brief review

Pigmentation is a common clinical finding of an oral cavity, but a proper diagnosis of the lesions is very challenging. Pigmentation can be focal, multifocal, associated with systemic/genetic disorder, or due to exogenous agents. Pigmented lesions are either melanocytic or nonmelanocytic. Pigmented lesions of the oral cavity have a broad spectrum of diversity. They present as racial pigmentation, innocuous lesions (amalgam tattoo, oral melanotic macule), benign nevi, and life-threatening malignant melanoma, and they can also produce a diagnostic dilemma. Thus, a proper diagnosis of a pigmented lesion in an early stage is very important for the accurate treatment plan. In this review, pigmented lesions of the oral cavity are briefly discussed.