A 34-year-old man presents with an asymptomatic 1 ´ 1 cm pigmented lesion in the right side of his palate. It is flat, and it is asymptomatic. Biopsy shows melanin pigment within a collection of benign-appearing spindle-shaped cells in the submucosa. This is consistent with:

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The presence of pigmentation within a collection of spindle-shaped cells in the submucosal tissue is consistent with a blue nevus. Melanoma would show malignant features on biopsy, and amalgam tattoo would present as a metallic discoloration due to the deposition of amalgam in the tissue. Melanotic macule presents as a flat, brownish-black patch that may be found on the lips, and physiologic pigmentation is a common finding that is non-specific.

A 34-Year-Old Man Presents with an Asymptomatic 1 ´ 1