دانلود رایگان پاورپوینت سرطان (انگلیسی)

Cancer staging
Based on the size or extent of the primary (main) tumor and whether it has spread to other areas of the body.
Summary staging (in situ, local, regional, and distant) is used for descriptive and statistical analysis of tumor registry data.
Cancer cells are present only in the layer of cells where they developed and have not spread, the stage is in situ.
If penetrated beyond the original layer of tissue, the cancer is invasive and categorized as local, regional, or distant stage based on the extent of spread