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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «P»:

  1. PAM PAM
    PAM: Primary amebic meningoencephalitis...
  2. Panacea Panacea
    Panacea: A universal remedy, a cure-all. The word "panacea" comes from the name of Panaceia, the daughter of Asklepios, the Greek god of medicine (whose staff with entwined snake is the symbol of medicine). Asklepios (known to the Romans as Aesculapius) had a number of children including not on...
  3. Pancolitis Pancolitis
    Pancolitis:Ulcerative colitis that involves the entire colon (the large intestine). Ulcerative colitis itself is a relatively common disease involving inflammation of the large intestine (the colon). The cause is unknown. It is a form of inflammatory bowel disease and has some similarity to a relat...
  4. Pancreas Pancreas
    Pancreas: A fish-shaped spongy grayish-pink organ about 6 inches (15 cm) long that stretches across the back of the abdomen, behind the stomach. The head of the pancreas is on the right side of the abdomen and is connected to the duodenum (the first section of the small intestine). The narrow en...
  5. Pancreas divisum Pancreas divisum
    Pancreas divisum: Pancreas divisum is a common congenital anomaly (an anomaly that is present at birth) of the pancreatic duct(s). The Pancreas is a deep-seated organ located behind the stomach. One of its functions is to produce enzymes that are important for the digestion of food in the int...
  6. Pancreas, annular Pancreas, annular
    Pancreas, annular: An abnormal ring of pancreatic tissue that encircles the duodenum and often causes intestinal obstruction. Nausea and vomiting are the usual symptoms and reflect the intestinal obstruction. Complete obstruction is usually evident in the newborn period. Partial obstruction may no...
  7. Pancreas, artificial Pancreas, artificial
    Pancreas, artificial: A machine that constantly measures glucose (sugar) in the blood and, in response to an elevated level of glucose, releases an appropriate amount of insulin. In this respect, the machine functions like a natural pancreas....
  8. Pancreatectomy Pancreatectomy
    Pancreatectomy: A procedure in which a surgeon takes out part or all of the pancreas (an organ behind the lower part of the stomach that is about the size of a hand). The pancreatectomy may be done, for example, because there is a tumor in the pancreas....
  9. Pancreatic Pancreatic
    Pancreatic: Having to do with the pancreas, a spongy, tube-shaped organ about 6 inches long. It is located in the back of the abdomen, behind the stomach. The head of the pancreas is on the right side of the abdomen. It is connected to the duodenum, the upper end of the small intestine. The narrow ...
  10. Pancreatic alpha cell Pancreatic alpha cell
    Pancreatic alpha cell: A type of cell in the pancreas (the organ of the digestive system located behind the stomach). Within the pancreas, the alpha cells are located in areas called the islets of Langerhans. Alpha cells make and release glucagon which raises the level of glucose (sugar) in the ...
  11. Pancreatic beta cell Pancreatic beta cell
    Pancreatic beta cell: A type of cell in the pancreas that makes insulin. The pancreas is a fish-shaped organ that stretches across the back of the abdomen behind the stomach. Within the pancreas there are areas that are called the islets of Langerhans. The beta cells constitute the predominant type...
  12. Pancreatic cancer Pancreatic cancer
    Pancreatic cancer: Malignancy of the pancreas. Pancreatic cancer has been called a "silent" disease because early pancreatic cancer usually does not cause symptoms. If the tumor blocks the common bile duct and bile cannot pass into the digestive system, the skin and whites of the eyes ...
  13. Pancreatic carcinoma Pancreatic carcinoma
    Pancreatic carcinoma: See: Pancreatic cancer....
  14. Pancreatic delta cell Pancreatic delta cell
    Pancreatic delta cell: A type of cell in the pancreas (the organ of the digestive system located behind the stomach). Within the pancreas, the delta cells are located in areas called the islets of Langerhans. The delta cells make somatostatin, a hormone that inhibits the release of numerous horm...
  15. Pancreatic insufficiency Pancreatic insufficiency
    Pancreatic insufficiency: Not enough of the digestive enzymes normally secreted by the pancreas into the intestine. Pancreatic insufficiency is a hallmark of cystic fibrosis. The pancreas is a spongy, tube-shaped organ about 6 inches long. It is located in the back of the abdomen, behind the st...