the lesions located in the mucosal tissue with polyp-like or papular appearance, so they should be differentiated from other neoplasms or non-neoplastic lesions.
由于病变组织位于黏膜组织内呈丘疹样或息肉样外观,因此需从临床及组织学角度与多种病变相鑒别。
conclusion the high prevalence of skin diseases in pupils of changsha were pityriasis alba, freckles, papular urticaria, acne, eczema, verrua vulgaris, lichen pilaris, hemangioma.