Conclusion Melanosis coli is inflammation,benign,reversibility chromatosis as characteristic,the disease is related to taking anthracene for long time constipation.

结论结肠黑变病是结肠的一种非炎症性、良性、可逆性的以色素沉着为特征的病变,该病的发生与长期便秘服用蒽琨类泻剂有。

Oculocutaneous albinism(OCA) is a group of autosomal recessive disorders of melanin synthesis,which is characterized by congenital hypopigmentation of skin,hair and eyes.

肤白化病是于黑色素合基因突变导致、肤、毛发黑色素沉着减少或缺乏引起的一类常染色体隐形遗传疾病的总称。

Histopathology showed moderate hyperkeratosis and rete ridge elongation with the epidermal thinning above the papillar layer and a few melanophages in the dermis.

腋下、腹股沟、乳房下色素沉着15年,无明显自觉症状。