Tumor

这是一篇关于Tumor的思维导图，主要内容有Growth Rate、Local Growth and lnvasion、 Metastasis。

Tumor

• Growth Rate
  • double time of the tumor cells
  • benign tumor
    • grow slowly and malignant tumors rapidly
    • Occasionally a tumor, either benign or malighant,becomes inactive for a period of time and then resumes its active growth
  • malignant tumor
    • increased growth rate is demonstrated by the presence of mitoses and of young cells
    • Occasionally a tumor, either benign or malighant,becomes inactive for a period of time and then resumes its active growth
• Local Growth and Invasion
  • benign tumor
    • push aside the surrounding normal tissues
  • malignant tumor
    • also grow by expansion
    • invade, infiltrate, and destroy the adjacent normal tissues
    • A primary characteristic is their invasive ability
  • All tumors grow by expansion with a progressive increase in bulk and a resultant compression of the surrounding tissues.
  • cancer cells elaborate products that directly indirectly are responsible for the phenomenon of invasion
  • carcinoma in situ the diagnosis of cancer
• Metastasis
  • The invasive property of cancer
    • continuous local extension of the disease
    • initiates
    • promotes tumor spread
  • sarcomas
    • venous route
  • the primary site can surmise distribution of lymph node metastasis
  • Metastasis through blood vessels is the common route for sarcomas and carcinomas
  • The mechanism of embolization of tumor cells is simple
  • malignant tumor
    • The ability to metastasize
    • route for the metastatic spread of cancer and carcinomas is through the lymphatic vessels
    • For cancers in the appropriate locations, a spread through serous cavities, spinal fluid,ureters, bronchi, oppose tissues are infrequent