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VIPoma
A VIPoma or vipoma () is a rare endocrine tumor that overproduces vasoactive intestinal peptide (thus ''VIP'' + '' -oma''). The incidence is about 1 per 10,000,000 per year. VIPomas usually (about 90%) originate from the non-β islet cells of the pancreas. They are sometimes associated with multiple endocrine neoplasia type 1. Roughly 50–75% of VIPomas are malignant, but even when they are benign, they are problematic because they tend to cause a specific syndrome: the massive amounts of VIP cause a syndrome of profound and chronic watery diarrhea and resultant dehydration, hypokalemia, achlorhydria, acidosis, flushing and hypotension (from vasodilation), hypercalcemia, and hyperglycemia. This syndrome is called Verner–Morrison syndrome (VMS), WDHA syndrome (from watery diarrhea–hypokalemia–achlorhydria), or pancreatic cholera syndrome (PCS). The eponym reflects the physicians who first described the syndrome. Symptoms and signs The major clinical features are prolon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Achlorhydria
Achlorhydria and hypochlorhydria are states where the production of hydrochloric acid in gastric secretions of the stomach is absent or low, respectively. Achlorhydria is commonly a complication of some other disease, such as chronic '' Helicobacter pylori'' infection or autoimmune pernicious anemia, as well as a possible side effect of long-term use of proton pump inhibitors. Complications of achlorhydria most frequently include small intestinal bacterial overgrowth and the nutritional deficiencies that can result from it. Rarely, achlorhydria may contribute to formation of gastric cancers or gastric carcinoid tumors. Signs and symptoms Irrespective of the cause, achlorhydria can result in known complications of bacterial overgrowth and intestinal metaplasia, and symptoms are often consistent with those diseases: * gastroesophageal reflux diseaseKines, Kasia, and Tina Krupczak. "Nutritional Interventions for Gastroesophageal Reflux, Irritable Bowel Syndrome, and Hypochlor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vasoactive Intestinal Peptide
Vasoactive intestinal peptide, also known as vasoactive intestinal polypeptide or VIP, is a peptide hormone that is vasoactive in the intestine. VIP is a peptide of 28 amino acid residue (chemistry), residues that belongs to a Secretin family, glucagon/secretin superfamily, the ligand (biochemistry), ligand of class II G protein–coupled receptors. VIP is produced in many tissues of vertebrates including the Gut (zoology), gut, pancreas, neocortex, and suprachiasmatic nuclei of the hypothalamus in the brain. VIP stimulates contractility in the heart, causes vasodilation, increases glycogenolysis, lowers arterial blood pressure and relaxes the smooth muscle of Vertebrate trachea, trachea, stomach and gallbladder. In humans, the vasoactive intestinal peptide is encoded by the ''VIP'' gene. VIP has a half-life (t½) in the blood of about two minutes. Function In the digestive system In the digestive system, VIP seems to induce smooth muscle relaxation (lower esophageal sphincte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Achlorhydria
Achlorhydria and hypochlorhydria are states where the production of hydrochloric acid in gastric secretions of the stomach is absent or low, respectively. Achlorhydria is commonly a complication of some other disease, such as chronic '' Helicobacter pylori'' infection or autoimmune pernicious anemia, as well as a possible side effect of long-term use of proton pump inhibitors. Complications of achlorhydria most frequently include small intestinal bacterial overgrowth and the nutritional deficiencies that can result from it. Rarely, achlorhydria may contribute to formation of gastric cancers or gastric carcinoid tumors. Signs and symptoms Irrespective of the cause, achlorhydria can result in known complications of bacterial overgrowth and intestinal metaplasia, and symptoms are often consistent with those diseases: * gastroesophageal reflux diseaseKines, Kasia, and Tina Krupczak. "Nutritional Interventions for Gastroesophageal Reflux, Irritable Bowel Syndrome, and Hypochlor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endocrine Oncology
Endocrine oncology refers to a medical speciality dealing with hormone-producing tumors, i.e. a combination of endocrinology and oncology. Few centres are specializing in hormone producing tumors only, due to the relatively low incidence. Most centres have gastroenterologists, oncologist or endocrinologists who deal with other diseases as well. One exception is the Uppsala Centre of Excellence in Neuroendocrine Tumors at Uppsala University Hospital in Sweden, where doctors treat only endocrine tumors. __TOC__ Endocrine tumors There are many different kinds of endocrine tumors, some of which are listed below: * Gastrointestinal ** ECLoma ** Midgut carcinoid ** Appendix carcinoid ** Hindgut carcinoid sometimes also referred to as Rectal carcinoid * Pulmonary ** Typical bronchial carcinoid ** Atypical bronchial carcinoid ** Large cell neuroendocrine carcinoma ** Small cell lung cancer * Endocrine pancreatic tumors ** Non-functioning endocrine pancreatic tumors ** Insulino ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiple Endocrine Neoplasia Type 1
Multiple endocrine neoplasia type 1 (MEN-1 aka Wermer Syndrome) is one of a group of disorders, the multiple endocrine neoplasias, that affect the endocrine system through development of neoplastic lesions in pituitary, parathyroid gland and pancreas. Individuals suffering from this disorder are prone to developing multiple endocrine and nonendocrine tumors. It was first described by Paul Wermer in 1954. Signs and symptoms Parathyroid Hyperparathyroidism is present in ≥ 90% of patients. Asymptomatic hypercalcemia is the most common manifestation: about 25% of patients have evidence of nephrolithiasis or nephrocalcinosis. In contrast to sporadic cases of hyperparathyroidism, diffuse hyperplasia or multiple adenomas are more common than solitary adenomas. Pancreas Pancreatic islet cell tumors are today the major cause of death in persons with MEN-1. Tumors occur in 60-80% of persons with MEN-1 and they are usually multicentric. Multiple adenomas or diffuse islet cell hyperpla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medical Eponyms
Medical eponyms are terms used in medicine which are named after people (and occasionally places or things). In 1975, the Canadian National Institutes of Health held a conference that discussed the naming of diseases and conditions. The conclusion, as summarized in ''The Lancet'', was this: "The possessive use of an eponym should be discontinued, since the author neither had nor owned the disorder." However, because of the nature of the history of medicine, new discoveries are often referred to using the name of the people who initially made the discovery. * List of eponymous diseases * List of eponymous fractures * List of eponymous medical devices * List of eponymous medical signs * List of eponymous medical treatments * List of eponymous surgical procedures * List of eponymous tests * List of human anatomical parts named after people * List of medical eponyms with Nazi associations * List of orthopaedic eponyms * List of eponyms in neuroscience, neurology and neurosurgery ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lethargy
Lethargy is a state of tiredness, sleepiness, weariness, fatigue, sluggishness, or lack of energy. It can be accompanied by depression, decreased motivation, or apathy. Lethargy can be a normal response to inadequate sleep, overexertion, overworking, stress, lack of exercise, improper nutrition, drug abuse, boredom, or a symptom of an underlying illness or disorder. It may also be a side effect of medication or caused by an interaction between medications or medication(s) and alcohol. It may also be an altered level of consciousness. When part of a normal response, lethargy often resolves with rest, adequate sleep, decreased stress, physical exercise, and good nutrition. Its symptoms, however, can last days or even months, so it can be a sign of a recent underlying illness or infection if it does not resolve normally. See also * Clinical depression * Disorders of diminished motivation * Encephalitis lethargica * Sleep apnea * Sleep deprivation * Somnolence Somnolence ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nausea
Nausea is a diffuse sensation of unease and discomfort, sometimes perceived as an urge to vomit. It can be a debilitating symptom if prolonged and has been described as placing discomfort on the chest, abdomen, or back of the throat. Over 30 definitions of nausea were proposed in a 2011 book on the topic. Nausea is a non-specific symptom, which means that it has many possible causes. Some common causes of nausea are gastroenteritis and other gastrointestinal disorders, food poisoning, motion sickness, dizziness, migraine, fainting, low blood sugar, anxiety, hyperthermia, dehydration and lack of sleep. Nausea is a side effect of many medications including chemotherapy, or morning sickness in early pregnancy. Nausea may also be caused by disgust and depression. Medications taken to prevent and treat nausea and vomiting are called antiemetics. The most commonly prescribed antiemetics in the US are promethazine, metoclopramide, and the newer ondansetron. The word na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypokalemia
Hypokalemia is a low level of potassium (K+) in the blood serum. Mild low potassium does not typically cause symptoms. Symptoms may include feeling tired, leg cramps, weakness, and constipation. Low potassium also increases the risk of an abnormal heart rhythm, which is often too slow and can cause cardiac arrest. Causes of hypokalemia include vomiting, diarrhea, medications like furosemide and steroids, dialysis, diabetes insipidus, hyperaldosteronism, hypomagnesemia, and not enough intake in the diet. Normal potassium levels in humans are between 3.5 and 5.0 mmol/L (3.5 and 5.0 mEq/L) with levels below 3.5 mmol/L defined as hypokalemia. It is classified as severe when levels are less than 2.5 mmol/L. Low levels may also be suspected based on an electrocardiogram (ECG). The opposite state is called hyperkalemia that means high level of potassium in the blood serum. The speed at which potassium should be replaced depends on whether or not there are symptom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oncology
Oncology is a branch of medicine that deals with the study, treatment, diagnosis, and prevention of cancer. A medical professional who practices oncology is an ''oncologist''. The name's Etymology, etymological origin is the Greek word ὄγκος (''ónkos''), meaning "tumor", "volume" or "mass". Oncology is focused on the diagnosis of cancer in a person, therapy (e.g., surgery, chemotherapy, radiotherapy and other modalities), monitoring of patients after treatment, palliative care of people with advanced-stage cancers, Ethics, ethical questions surrounding cancer care, Screening (medicine), screening of patients, and the study of cancer treatments through clinical research. An oncologist typically focuses on a specialty area in cancer treatment, such as surgery, Radiation therapy, radiation, gynecology, gynecologic oncology, geriatrics, geriatric oncology, pediatrics, pediatric oncology, and various organ-specific disciplines (breast, brain, liver, among others). The exp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glucose
Glucose is a sugar with the Chemical formula#Molecular formula, molecular formula , which is often abbreviated as Glc. It is overall the most abundant monosaccharide, a subcategory of carbohydrates. It is mainly made by plants and most algae during photosynthesis from water and carbon dioxide, using energy from sunlight. It is used by plants to make cellulose, the most abundant carbohydrate in the world, for use in cell walls, and by all living Organism, organisms to make adenosine triphosphate (ATP), which is used by the cell as energy. In energy metabolism, glucose is the most important source of energy in all organisms. Glucose for metabolism is stored as a polymer, in plants mainly as amylose and amylopectin, and in animals as glycogen. Glucose circulates in the blood of animals as blood sugar. The naturally occurring form is -glucose, while its Stereoisomerism, stereoisomer L-glucose, -glucose is produced synthetically in comparatively small amounts and is less biologicall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyperglycemia
Hyperglycemia is a condition where unusually high amount of glucose is present in blood. It is defined as blood glucose level exceeding 6.9 mmol/L (125 mg/dL) after fasting for 8 hours or 10 mmol/L (180 mg/dL) 2 hours after eating. Blood glucose level indication Patients with diabetes are oriented to avoid exceeding the recommended postprandial threshold of 160 mg/dL (8.89 mmol/L) for optimal glycemic control. Values of blood glucose higher than 160 mg/dL are classified as 'very high' hyperglycemia, a condition in which an excessive amount of glucose (glucotoxicity) circulates in the blood plasma. These values are higher than the renal threshold of 10 mmol/L (180 mg/dL) up to which glucose reabsorption is preserved at physiological rates and insulin therapy is not necessary. Blood glucose values higher than the cutoff level of 11.1 mmol/L (200 mg/dL) are used to diagnose T2DM and strongly associated with metabolic disturbances, although symp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
