Tumor & Cancer Immunology and Pediatric-oncology 2022

Tumors

Tumor is an abnormal growth of body tissue. Tumors can be cancerous (malignant) or noncancerous (benign). Tumors are of many types such as Carcinoid Tumor, Pituitary Tumor, and Tumor lysis syndrome. In general, tumors occur when cells divide and grow excessively in the body. Normally, the body controls cell growth and division. New cells are created to replace older ones or to perform new functions. Cells that are damaged or no longer needed die to make room for healthy replacements. If the balance of cell growth and death is disturbed, a Tumor may form. Problems with the body's immune system can lead to tumors. Carcinoid tumors are of neuroendocrine origin and derived from primitive stem cells in the gut wall, but they can be seen in other organs, including the lungs, mediastinum, thymus, liver, pancreas, bronchus, ovaries, prostate, and kidneys .Carcinoid tumors have high potential for metastasis.