Cancer Ribbons - I | Personalized Cause
Cancer ribbons colors and meanings for more than 100 types of cancer. Cancer ribbons page includes a brief explanation of cancer type beginning with the letter I.
Cancer Ribbons / Cancer Awareness Ribbons
There are more than 100 types of cancer. Types of cancer are usually named for the organs or tissues where the cancers form, but they also may be described by the type of cell that formed them.
Intraocular (uveal) melanoma is a rare cancer that forms in the eye. It usually has no early signs or symptoms. As with melanoma of the skin, risk factors include having fair skin and light-colored eyes.
Childhood Intraocular Melanoma - see Unusual Cancers of Childhood
Intraocular melanoma begins in the middle of three layers of the wall of the eye. The outer layer includes the white sclera (the "white of the eye") and the clear cornea at the front of the eye. The inner layer has a lining of nerve tissue, called the retina, which senses light and sends images along the optic nerve to the brain. The middle layer, where intraocular melanoma forms, is called the uvea or uveal tract, and has three main parts: the iris, the ciliary body, and the choroid.
Islet Cell Tumors, Pancreatic Neuroendocrine Tumors
Pancreatic cancer can develop from two kinds of cells in the pancreas: exocrine cells and neuroendocrine cells, such as islet cells. The exocrine type is more common and is usually found at an advanced stage. Pancreatic neuroendocrine tumors (islet cell tumors) are less common but have a better prognosis.
There are two kinds of cells in the pancreas:
Endocrine pancreas cells make several kinds of hormones (chemicals that control the actions of certain cells or organs in the body), such as insulin to control blood sugar. They cluster together in many small groups (islets) throughout the pancreas. Endocrine pancreas cells are also called islet cells or islets of Langerhans. Tumors that form in islet cells are called islet cell tumors, pancreatic endocrine tumors, or pancreatic neuroendocrine tumors (pancreatic NETs).
Exocrine pancreas cells make enzymes that are released into the small intestine to help the body digest food. Most of the pancreas is made of ducts with small sacs at the end of the ducts, which are lined with exocrine cells.
Pancreatic neuroendocrine tumors (NETs) may be benign (not cancer) or malignant (cancer). When pancreatic NETs are malignant, they are called pancreatic endocrine cancer or islet cell carcinoma. Pancreatic NETs are much less common than pancreatic exocrine tumors and have a better prognosis.