恶性肿瘤就是通常所说的癌症,恶性肿瘤在早期症状很少或症状不典型,发展到一定阶段才逐渐从三个主要方面表现出来: 1.局部表现 肿块 是肿瘤细胞异常增生形成的,可在体表发现或在深部摸到肿物,也可看到器官(如肝脏、甲状腺)或淋巴结肿大。良性肿瘤所形成的肿块生长较慢,表面光滑,界限清楚,活动度好;恶性肿瘤一般生长较快,表面不平,不易推动。 压迫 症状常见于颅内、颈部、纵隔、腹膜后、椎管内等。如颅内肿瘤压迫脑神经引起颅内压增高,可造成头痛、恶心、呕吐、视觉障碍等。 阻塞 阻塞常发生于空腔脏器,如 Malignant cancer is commonly referred to as cancer, malignant tumor in the early symptoms or atypical symptoms, developed to a certain stage before gradually from the three main aspects: 1. Local manifestations of tumor cells is the formation of abnormal proliferation, Body surface or touch in the deep tumor, but also see organs (such as the liver, thyroid) or lymph nodes. Benign tumors formed by the slow growth of the tumor, the surface is smooth, well-defined, good mobility; malignant tumors generally grow faster, uneven surface, not easy to promote. Compression symptoms common in the brain, neck, mediastinum, retroperitoneal, spinal canal and so on. Such as intracranial tumor oppression of the cranial nerves caused by increased intracranial pressure, can cause headache, nausea, vomiting, visual impairment. Obstruction occlusion often occurs in hollow organs, such as