Groups of Lung Cancer Staging
Data from test results at clinical stages or in some cases, the tumor itself (pathological stage) are usually needed to decide your overall stage.
According to research, cancers that involve a tumor are usually staged into five broad groups. These groups are usually identified with Roman numerals. Other types of cancer, such as lymphoma, brain cancer, and blood cancer have a different staging system. Each stage described the severity of the cancer.
- Stage 0: At this stage there is no cancer. The only cells present are abnormal cells that could develop into cancerous ones. This stage is also referred to as carcinoma in situ [5].
- Stage I: The cancer here is small and is only present in one area. This stage is also known as early-stage cancer.
- Stage II and III: At this stage, the cancer is now bigger and has spread to lymph nodes [6] and tissues close to the site.
- Stage IV: The cancer in this stage has spread to every part of the body. It is also known as metastatic or advanced cancer.