以前科学家们不能确认癌症是否直接起源于干细胞，或子代细胞是否是肿瘤发生的根源。
Previously scientists could not be sure if the cancer causing faults occurred directly to stem cells, or whether 'daughter' cells were the route cause of the tumour.
这些结果明确揭示了肿瘤细胞的双向分化特征，进一步支持该瘤间皮起源的观点。
These observations exhibited a obvious biphasic differentiated (epithelial and mesenchymal) nature of tumor cells, and indicated that adenomatoid tumors were of mesothelial origin.
结论：黑色素细胞肿瘤切除后瘢痕中黑色素沉着的皮肤镜诊断可为判断色素沉着的起源提供有用的信息。
CONCLUSIONS: Dermoscopic examination of melanotic pigmentations in excision scars of melanocytic tumours provides useful information about the origin of that pigmentation.
目的：本文旨在讨论脊柱神经节瘤的临床表现及治疗。神经节瘤起源于交感神经节的神经嵴细胞，为一少见的肾上腺外的副神经节肿瘤。
Objective. To discuss the spinal presentation and treatment of paraganglioma, a rare tumor of the extra-adrenal paraganglia, derived from neural crest cells in sympathetic ganglions.
最常见的的原发恶性肿瘤是鳞状细胞癌，其次是起源于唾液腺的腺样囊腺癌。
The most common primary malignant tumor is squamous cell carcinoma, with the second most common being adenoid cystic carcinoma arising from the salivary glands.
脑原发肿瘤一般都被认为是胶质细胞起源的。
The most common primary tumors of the human brain are thought to be of glial cell origin.
鼻腔神经胶质瘤(又被称为嗅母细胞瘤)是一种不常见的恶性肿瘤，被认为起源于嗅上皮的感觉神经感受体细胞。
Esthesioneuroblastoma (also known as olfactory neuroblastoma) is an uncommon malignant neoplasm of the nasal vault believed to arise from neurosensory receptor cells in the olfactory epithelium.
神经母细胞瘤是起源于肾上腺髓质和交感神经链的恶性肿瘤，早期转移，死亡率很高。
Neuroblastoma is the malignant tumor that arises from adrenal medulla and the sympathetic nerve and the fatal rate is very high when metastasis occurs in the early phase.
但是肿瘤细胞起源于我们本身的细胞。
本文从发育生物学角度详细评述了肿瘤细胞的起源、胚胎与肿瘤相似性和差异性比较及肿瘤与胚胎相互作用的研究进展。
This article reviews the origin of cancer cells, the similarities and the differences between the tumor and the embryo, moreover the experimental progress of the tumor and the embryo in detail.
结论SPTP可能起源于胰腺原始多潜能干细胞，诊断上须与胰腺其它良恶性肿瘤相鉴别。
Conclusions SPTP may originate from primitive multipotent stem cell. The differential diagnosis should be made from other tumors of the pancreas.
肿瘤细胞超微结构的异型性：一般来说，良性肿瘤的超微结构与其起源的组织基本相似。
Tumor cell ultrastructure heteromorphism: Generally speaking, the ultrastructure of benign and its origin is basically similar to the organization.
多形性胶质母细胞瘤起源于星形胶质细胞，这是胶质细胞的一种。促使正常工作的星形胶质细胞转变为肿瘤细胞的原因尚不得而知。 。
GBM M originates from astrocytes, which are a type of glial cell. The factors that cause normal-functioning astrocytes to become cancerous is not well understood.
叶状肿瘤肿瘤细胞的组织学起源是导管周围成纤维细胞。
Neoplastic cells of PT are probably derived from periductal fibroblast according to the ultrastructure characters.
肝细胞癌的卫星结节为肿瘤的肝内扩散或肿瘤的多中心起源。
The satellite nodules of this hepatocellular carcinoma represent either intrahepatic spread of the tumor or multicentric origin of the tumor.
结论肝未分化(胚胎性)肉瘤好发于儿童，具有独特的临床病理特点，可能起源于原始间质细胞，为预后较差之儿童肝肿瘤。
Conclusion UESL is a rare childhood malignant tumor of the liver, which may arise from primitive mesenchymal cell and reveals poor prognosis.
神经内分泌肿瘤是指具有分泌颗粒细胞的肿瘤，起源于神经外胚层。
Neuroendocrine tumours are tumours of cells which possess secretory granules and originate from the neuroectoderm.
神经内分泌肿瘤是指携带分泌颗粒的细胞肿瘤，起源于神经外胚层。
Neuroendocrine tumours are tumours of cells, which possess secretory granules and originate from the neuroectoderm.
小细胞肺癌是神经内分泌肿瘤，起源于APUD(胺前体摄取脱羧化)细胞。
Small cell lung cancer is neuroendocrine neoplasm and origins from APUD (amine precursor uptake decarboxylation) cell.
肿瘤干细胞与正常干细胞具有许多相似的特征和信号通路，因而认为正常干细胞是肿瘤干细胞起源的最佳候选细胞。
Normal stem cells are regarded as an ideal candidate for the origin of cancer stem cells when take similar characters and signaling pathways between them into consideration.
所以，人们认为肿瘤多起源于正常干细胞。然而，目前研究中关于上皮肿瘤干细胞及其与正常上皮干细胞的关系了解甚少。
So it is generally assumed that tumor cells are derived from normal stem cells, more work is needed to identify and characterize epithelial tumor stem cells.
横纹肌肉瘤是起源于原始胚胎间叶细胞的一种软组织恶性肿瘤。
Rhabdomyosarcoma a is a soft tissue neoplasm arising from primitive embryonal mesenchyma.
横纹肌肉瘤是起源于原始胚胎间叶细胞的一种软组织恶性肿瘤。
Rhabdomyosarcoma a is a soft tissue neoplasm arising from primitive embryonal mesenchyma.
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