Canadian journal of dental hygiene : CJDH = Journal canadien de l'hygiene dentaire : JCHD · 2025
A simultaneous presentation of uncommon, pigmented lesions: Oral melanoacanthoma and moderate oral epithelial dysplasia.
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Sgarbanti Carlo, Penner Carla, Mutalik Vimi S
Аннотация
INTRODUCTION: Melanin-containing mucosal lesions can present a diagnostic challenge due to the presence of a wide range of lesions with a similar clinical appearance.
CASE DESCRIPTION: This is a report of a unique case of the simultaneous presentation of 2 pigmented lesions in a 68-year-old white female patient.
DISCUSSION: The first pigmented lesion on the ventral tongue was diagnosed as melanoacanthoma, which does not have any potential for malignant transformation. The ventral tongue is a very unusual location for a melanoacanthoma. Interestingly, another lesion on the buccal mucosa with a similar appearance presented as moderate epithelial dysplasia with increased melanin pigment that has the potential for malignant transformation. Pigmented moderate oral epithelial dysplasia is a very rare condition. The simultaneous presence of a melanoacanthoma would have led to a mistaken assumption of multifocal melanoacanthoma which, although rare, has been described in the literature.
CONCLUSION: These findings reinforce that it is prudent to perform multiple biopsies of all suspicious oral lesions.
CASE DESCRIPTION: This is a report of a unique case of the simultaneous presentation of 2 pigmented lesions in a 68-year-old white female patient.
DISCUSSION: The first pigmented lesion on the ventral tongue was diagnosed as melanoacanthoma, which does not have any potential for malignant transformation. The ventral tongue is a very unusual location for a melanoacanthoma. Interestingly, another lesion on the buccal mucosa with a similar appearance presented as moderate epithelial dysplasia with increased melanin pigment that has the potential for malignant transformation. Pigmented moderate oral epithelial dysplasia is a very rare condition. The simultaneous presence of a melanoacanthoma would have led to a mistaken assumption of multifocal melanoacanthoma which, although rare, has been described in the literature.
CONCLUSION: These findings reinforce that it is prudent to perform multiple biopsies of all suspicious oral lesions.