a small brownish spot (of the pigment melanin) on the skin
造句
用作名詞(n.)
Histologic examination of the tan patch reveals features of lentigo simplex, whereas the speckled macules and papules disclose melanocytic nevi. 組織病理下褐色斑塊呈現單純性黑痣，而其上的斑點及丘疹則為黑色素細胞痣。