Melanocanthoma

Oral melanoacanthoma of the palate: An unusual presentation of an uncommon entity

“…Although cutaneous MAs have also been observed, the cutaneous variant is distinctly different from its oral counterpart. Cutaneous MA, first described by Bloch in 1927, 3 is a benign mixed proliferation of keratinocytes and melanocytes and is considered to be a variation of seborrheic keratosis. Most cases of cutaneous MA have been seen in middle-age white adults without a gender predilection.…”

“… 1 , 2 It represents a distinct entity from the cutaneous MA, which is typically seen on the trunk and is considered to be a variant of seborrheic keratosis. 3 When it occurs in the oral cavity, MA presents as a rapidly expanding, solitary brown macule, most often involving the buccal mucosa. We present a case of MA occurring on the soft palate of a 45-year-old African-American woman, an atypical oral location for this lesion.…”

Oral Melanoacanthoma of a Rare Intraoral Site: Case Report and Review of Literature

“…12 Though it was originally described as a benign skin tumor of keratinocytes and dendritic melanocytes, there is now evidence that the intraoral lesions are unlike those occurring on skin. 3 …”

“…Mostly unilateral and solitary, 16 these deeply pigmented lesions may have a flat or slightly raised surface. The other end of the spectrum of clinical presentation includes lesions that may be bilateral, 17 and even multifocal, 181819 as well as those which even have a proliferative or warty surface. These intraoral hypermelanotic macules or papules are typically brown, black or blue-black in color, with possible variation in the intensity of pigmentation.…”

“…These intraoral hypermelanotic macules or papules are typically brown, black or blue-black in color, with possible variation in the intensity of pigmentation. 131820 …”