结膜黑色素痣是眼科常见的良性肿瘤,而结膜黑色素瘤则甚罕见,它们的来源、预后及分类引起了一代人的争论。目前多数病理学家认为是胚胎期黑色素细胞从神经嵴移行到皮肤真皮、粘膜基质、皮肤及粘膜的基底细胞层、眼的葡萄膜、及中央神经系统软脑膜。在人类真皮 Conjunctiva melanin plaques are common benign tumors of the eye, and conjunctival melanomas are rare. Their origins, prognosis, and classification have caused controversy for generations. At present, most pathologists believe that embryonic melanocytes migrate from neural crests to the skin dermis, mucous membrane stroma, basal cell layers of the skin and mucous membranes, the uveal membrane of the eye, and the pia mater of the central nervous system. In human leather