Coagulopathies , bleeding tumors , gastric ulceration , and external or internal parasites should be excluded as causes .

凝血功能障碍、肿瘤出血、胃溃疡、及体内或体外寄生虫，应作为可能的原因并逐一排查。

However when they injected the hind leg of mice with the cd47 suppressor , it showed much less hair loss , ulceration and peeling when targeted by radiation than an untreated leg .

但是他们发现，在给小鼠的后腿注射了cd47抑制剂后，脱发，溃疡和脱皮这些暴露在放射线下的副作用相比于没有注射cd47抑制剂的小鼠后腿减轻了很多。

This can happen if the std causes ulceration or breaks in the skin ( e.g. syphilis or herpes ) , or if it stimulates an immune response in the genital area ( e.g. chlamydia or gonorrhea ) .

这是因为性病会导致溃疡或皮肤破损（如梅毒或疱疹），并且它能够刺激生殖器区域的免疫反应（如衣原体或淋病）。

If no evidence of external bleeding is found , a source of internal or occult blood loss must be sought , eg , a ruptured splenic tumor , coagulopathy , gi ulceration or parasites , or other neoplasia .

如果没发现外出血，必须寻找各种内出血或隐性失血源，例如，脾脏肿瘤破裂、凝血功能障碍、胃肠道溃疡、寄生虫或其他肿瘤。

The earliest references to cancer , in 2600bc or so by imhotep , an ancient egyptian physician , then by hippocrates and galen , were simple clinical descriptions : swelling , ulceration , death .

最早提及癌症是在公元前2600年左右，出自古埃及医生印和阗，接着是希波克拉底和盖伦，当时癌症仅是简单的临床描述：肿胀、溃烂、死亡。