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Encyclopedia > Benign
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The term benign is mostly used to describe a tumor, of which the cells do not invade surrounding tissues and do not metastasize to other parts of the body. A tumor can be either benign or malignant. Wikipedia does not have an article with this exact name. ... Wiktionary (from wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 150 languages. ... Tumor or tumour literally means swelling, and is sometimes still used with that meaning. ... Metastasis (Greek: change of the state) is the spread of cancer from its primary site to other places in the body. ... In medicine, malignant is a clinical term that means to be severe and become progressively worse, as in malignant hypertension. ...


Benign tumors

Investigation under the microscope

The diagnosis "benign" can be made by the pathologist by looking at representative slices of the tumor under his microscope. Exact qualifications can vary per cell type, but in short, in a benign tumor cells still look very much like the cells that they originate from, and they never invade into the surrounding tissue. Some tumors (especially skin growths) can already macroscopically (by the eye) be classified as benign by a qualified doctor. When in doubt, a physician will send in a sample for microscopic investigation. To meet Wikipedias quality standards, this article or section may require cleanup. ... Robert Hookes microscope (1665) - an engineered device used to study living systems. ... Look up cell in Wiktionary, the free dictionary. ... Look up Tissue on Wiktionary, the free dictionary The word tissue has several meanings: Aerial tissu is an acrobatic art form, and is one of the circus arts. ...

Benign tumors that are not truly benign in their behaviour

A very small percentage of benign tumors can, however, be life-threatening to the patient when not treated: Pediatric polysomnography patient Childrens Hospital (Saint Louis), 2006 A patient or invalid is any person who receives medical attention, care, or treatment. ...

  • A benign tumor can, due to its growing mass and its location, cause pressure on surrounding vital tissues and organs. If that tumor cannot be removed completely, this could mean that the patient can die of complications. This could especially happen with some benign kind of brain tumors of tumors situated near the heart or in the neck near the large arteries and wind pipe.
  • A benign tumor can sometimes become a penis when given enough time. These tumors are benign, but are sometimes also referred to as premalignant. The chance of this transition happening depends on the kind of tumor and the kind of cells that the tumor originates from. In premalignant tumors, the pathologist will see a perfectly benign pattern of the tumor under the microscope. He will classify this tumor as premalignant, when it is known that this kind of benign tumor can become malignant when left alone for a long enough time. Polyps of the intestine and the bladder, and certain moles are known to be premalignant tumors. Cervical cancer also has premalignant stages that can be found using a pap smear.

When a premalignant tumor can be removed completely before it turned malignant, its further behaviour is indeed very benign: after complete removal no further problems, regrowth or metastasis are expected. An organ is the following: In anatomy, an organ is a group of tissues which perform some function. ... A brain tumor is any intracranial tumor created by abnormal and uncontrolled cell division, normally either found in the brain itself (neurons, glial cells (astrocytes, oligodendrocytes, ependymal cells), lymphatic tissue, blood vessels), in the cranial nerves (myelin-producing Schwann cells), in the brain envelopes (meninges), skull, pituitary and pineal gland... The heart and lungs, from an older edition of Grays Anatomy. ... A human neck. ... A premalignant condition is a disease, syndrome, or finding that, if left untreated, may lead to cancer. ... This article is about the cnidarian polyps. ... In anatomy, the intestine is the portion of the alimentary canal extending from the stomach to the anus and, in humans and other mammals, consists of two segments, the small intestine and the large intestine (or colon). ... A bladder is a pouch or other flexible enclosure with waterproof or gasproof walls. ... The word mole when used alone, has several possible meanings in the English language: Mole (animal): a small burrowing mammal. ... Cervical cancer is a malignancy of the cervix. ... The pap smear as we know it is an invention of Dr. Georgios Papanikolaou (1883-1962), an American of Greek birth, the father of cytopathology. ...

For most benign tumors, however, the term "benign" is true in all meanings of the word: the tumor will never cause any problems.

Complaints caused by benign tumors

  • Bleeding or occult blood loss causing anemia
  • Obstruction, e.g., of the bowel
  • Pressure causing pain or dysfunction
  • Cosmetic changes
  • Itching
  • Effects of excessive amounts of hormones secreted by the tumor
  • Worries about growing mass

Anemia (AmE) or anaemia (BrE), from the Greek () meaning without blood, refers to a deficiency of red blood cells (RBCs) and/or hemoglobin. ... Bowel obstruction is a mechanical blockage of the intestines, preventing the normal transit of the products of digestion. ...

Other uses of the word benign

The term benign can also refer to any medical condition or anatomical malformation which, untreated or with symptomatic therapy, will not become life-threatening. NB: This means that in oncology, the word benign can sometimes be confusing, since some tumors that are considered benign under the microscope can have malignant consequences for the patient. In medicine, a disease is symptomatic when it is at a stage when the patient is experiencing symptoms. ...

Benign can also mean that something, such as a substance, practice or policy, is not considered harmful.

Headline text

  Results from FactBites:
Benign familial infantile seizures (4022 words)
Vigevano and coworkers directed their attention to cases that exhibited a family history of convulsions with benign outcome during infancy and autosomal dominant inheritance, suggesting the term "benign infantile familial convulsions.” The ILAE Task Force on Classification and terminology recently stated that the term "seizure" is preferred to the term "convulsion" (Engel 2001).
In 1994 Malafosse demonstrated that benign infantile familial convulsions is not an allelic form of benign neonatal familial convulsions, excluding the marker on chromosome 20 (Malafosse et al 1994).
Benign infantile familial convulsions are not an allelic form of the benign familial neonatal convulsions gene.
Benign vs Secondary/Pogressive Multiple Sclerosis: The Potential Role Of Proton MR Spectroscopy In Defining The Nature ... (1461 words)
Thirty patients with Clinically Definite MS, including 16 patients with Benign MS and 14 with Secondary/Progressive MS, and a group of 13 healthy volunteers were studied with combined stimulated-echo acquisition mode proton MR Spectroscopy and MR imaging (all patients received contrast material).
Acute enhancing lesions of Benign and Secondary/Progressive MS were characterized by a reduction in N-AcetylAspartate (NAA)/Choline and NAA/Creatine and an increase in Inositol compounds/Creatine as compared with Normal White Matter.
This study suggests that patients with Benign MS have two different patterns of disease evolution, one characterized by very low clinical and MR activities, the other in which the lack of disabling symptomatology might be related to factors like site, size and nature of lesions.
  More results at FactBites »



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