NF 1基因突变导致肿瘤抑制异常，可发生各种各样的良性和恶性肿瘤。
The genetic mutation of the NF1 leads to abnormal tumor suppression, leading to a variety of benign and malignant tumors.
作者把这类皮肤病按照感染类疾病，良性和恶性肿瘤，外伤，环境危害，炎症反应分类。
The author has separated the sports-related dermatoses into categories including infections, benign and malignant neoplasms, traumatic conditions, environmental hazards, and inflammatory reactions.
除非肿瘤已压迫或侵入神经，通常并不会造成疼痛。良性和恶性肿瘤皆会压迫邻近组织，阻塞血管或增生激素，以上症状都可能致死。
Tumours may not cause pain until they press on or invade nerves. both benign and malignant tumours can press on nearby structures block vessels or produce excess hormones all of which can cause death.
除非肿瘤已压迫或侵入神经，通常并不会造成疼痛。良性和恶性肿瘤皆会压迫邻近组织、阻塞血管或增生激素，以上症状都可能致死。
Tumours may not cause pain until they press on or invade nerves. both benign and malignant tumours can press on nearby structures block vessels or produce excess hormones all of which can cause death.
结论原发性恶性肿瘤和某些良性肿瘤需要大范围的气管节段切除。
Conclusions Extensive segmental resection of the trachea is the treatment of choice for primary malignancy and occasionally for benign tracheal tumors.
根据2004年WHO的组织学分类，肾上皮性肿瘤可分为10类恶性肿瘤和2类良性肿瘤。
According to the histological classification of WHO (2004), the epithelial tumors of kidney is including 10 kinds of malignant and 2 kinds of benign tumors.
结果恶性肿瘤组的阳性率为77.74%，显著高于良性疾病组（35.48%， P<0.01）和正常对照组（22.09%，P<0.01）。
Results The positive ratio of 77.74% in the malignant tumor group was significantly higher than that of the benign diseases group (35.48%, P<0.01) and the normal control group (22.09%, P<0.01).
良性肿瘤尽量保脾，恶性肿瘤行根治性脾切除术及术后放化疗和免疫治疗等。
Saving-spleen operation is recommended for benign splenic tumor, and radical operation and postoperative radiochemotherapy and immunotherapy are important for splenic malignant tumor.
核磁共振技术不能够很好的区分良性肿瘤和恶性肿瘤。
The NMR technology can not distinguish the benign cancer and malignant cancer well.
方法回顾性分析了105例胰腺癌患者，70例非胰腺外分泌恶性肿瘤以及30例胰腺良性疾病患者术前血清CEA、CA19-9和CA242水平。
Methods Preoperative serum CEA, CA19-9, and CA242 were measured in 105 pancreatic cancer, 70 non-pancreatic malignance, and 30 benign pancreatic diseases.
局限性病变分为“良性肿瘤”、“恶性肿瘤”、“囊性病变”和“其他非肿瘤性病变”四组。
The 208 localized lesions were divided into 4 groups: benign tumors, malignant tumors, cyst lesions and non-neoplastic lesions.
局限性病变分为“良性肿瘤”、“恶性肿瘤”、“囊性病变”和“其他非肿瘤性病变”四组。
The 208 localized lesions were divided into 4 groups: benign tumors, malignant tumors, cyst lesions and non-neoplastic lesions.
应用推荐