推荐回答（5个）
於人体从头发发根到脚趾头指甲床下的组织细胞，可能衍生出来的癌症超出一百种以上。也正因此，癌症的诊疗一定要求助於学有专精的”临床肿瘤〃专业工作人员。为了方便了解起见，我们可以将癌症简要地区分成底下几种：
1)血液科恶性疾病(hematologic malignancies)，此大类包括急、慢性白血病，恶性淋巴瘤，多发性骨髓瘤…等
2)实质固态瘤(solid tumors)。这里头，实质固态瘤依照其每一种癌症恶性细胞的来源，在人体胚胎学上的区别，又可大致再细分成1.上皮细胞癌(carcinoma)，如肺癌，胃癌，子宫颈癌….等；还有2.肉瘤(sarcoma)，如软体组织肉瘤，骨肉瘤….等；以及3.其它恶性实质固态瘤，如生殖母细胞瘤(germ cell tumors)，视网膜母细胞瘤(retinoblastoma)…等。
十大癌症排行
87年时，男性的十大癌症是：肝癌、肺癌、直肠结肠癌、胃癌、口腔癌、食道癌、鼻咽癌、何杰金淋巴癌、摄护腺癌、胰脏癌，排名与去年相同。
女性的十大癌症是：肺癌、肝癌、直肠结肠癌、子宫颈癌、胃癌、非何杰金淋巴癌、胰脏病、胆囊癌、白血病，子宫颈癌取代女性乳癌重新登上第四位。
十大癌症依序是：肝癌、肺癌、结肠直肠癌，子官颈癌、非何杰金淋巴癌、胰脏癌。
肿瘤分二类,
良性.
恶性.
恶性的肿瘤叫癌!
癌分为:
血癌(白血病)
骨癌
淋巴癌(包括淋巴细胞瘤)
肠癌
肝癌
胃癌
盆腔癌(包托子宫癌,宫颈癌)
肺癌（包括纵隔癌）
脑癌
神经癌
乳腺癌
食道癌．
肾癌
肿瘤分二类,良性.恶性.
恶性的肿瘤叫癌!
癌分为:血癌(白血病),骨癌,淋巴癌(包括淋巴细胞瘤),肠癌,肝癌,胃癌,盆腔癌(包托子宫癌,宫颈癌),肺癌（包括纵隔癌）,脑癌,神经癌,乳腺癌,食道癌,肾癌。
恶性肿瘤分为常见的癌，是指上皮来源的间叶来源的我们称为肉瘤，还有淋巴造血系统的，称之为淋巴瘤或者白血病，当然还有很多特殊的叫法，是因为它组织来源的，比如说脑瘤的叫法称之为胶质瘤，少突胶质细胞肿瘤，室管膜肿瘤等等，真正人体内的各类肿瘤要细分起来有上万种，是非常复杂的，需要大家能够记住的，就是我们常说的癌，肉瘤包括淋巴瘤这都是恶性的，这类的肿瘤才是让大家需要及时明确及时诊断的。
未分化癌肿瘤组织与正常组织相差很大，成熟度差，恶性度高。
类型来说，
高分化癌转移少，发展慢，预后良好。低分化癌转移多，发展快，预后差。未分化癌更差。
低分化癌与未分化癌对放疗、化疗较敏感，治疗时肿块较快的缩小或消失，但总的预后并不佳。
所以说未分化是癌细胞恶化程度最高，同时预后最差的一种
参考文献：www.zyka.cn
中医抗癌网
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