left ankle following a sprain
Here, the tumor
is the result of edema
caused by inflammation
. In medical parlance, swelling is the enlargement of organs caused by accumulation of excess fluid in tissues, called Edema. A sprained ankle, also known as an ankle sprain, rolled ankle, ankle injury or ankle ligament injury, is a common medical condition Oedema (or Edema in American English formerly known as dropsy or hydropsy, is the increase of Interstitial fluid in any organ &mdash swelling Inflammation ( Latin, inflamatio, to set on fire is the complex biological response of vascular tissues to harmful stimuli such as Pathogens
tumor of the cheek skin, here a benign neoplasm
of the sweat glands
called Hidradenoma. A benign tumor is a Tumor that lacks all three of the Malignant properties of a Cancer. The skin contains two different groups of sweat glands: Apocrine sweat glands and Merocrine sweat glands.
A Tumor or tumour (via Old French tumour from Latin tumor "swelling") originally meant an abnormal swelling of the flesh. Old French was the Romance Dialect continuum spoken in territories which span roughly the northern half of modern France and parts of modern Belgium Latin ( lingua Latīna, laˈtiːna is an Italic language, historically spoken in Latium and Ancient Rome. In contemporary English, tumor has evolved to become synonymous with neoplasia , all other forms being called swelling . In medical parlance, swelling is the enlargement of organs caused by accumulation of excess fluid in tissues, called Edema. This tendency has also become common in medical literature. The noun tumefaction, derived from the adjective tumefied, is the current medical term for non-neoplastic tumors .
Tumors and/or swellings can be caused by:
- Neoplasia, an abnormal proliferation of tissues. Most (not all) neoplasms cause a tumor. Neoplasms (or tumors) may be benign or malignant (cancer). A benign tumor is a Tumor that lacks all three of the Malignant properties of a Cancer. Cancer (medical term Malignant Neoplasm) is a class of Diseases in which a group of cells display uncontrolled
- Non-neoplastic causes :
- Inflammation, by far the most common cause; tumor is one of the classic signs of inflammation. Inflammation ( Latin, inflamatio, to set on fire is the complex biological response of vascular tissues to harmful stimuli such as Pathogens  The lump following a blow on the head is a typical example. Infection is another common cause of inflammation. An infection is the detrimental Colonization of a host Organism by a foreign Species.
- Edema, the accumulation of an excessive amount of fluid in the tissues, either with or without inflammation. Oedema (or Edema in American English formerly known as dropsy or hydropsy, is the increase of Interstitial fluid in any organ &mdash swelling
- Malformation, a congenital anomaly in the architecture of a tissue. A congenital disorder is a disease or disorder that is present at birth A congenital disorder is a disease or disorder that is present at birth A typical example is an epidermal nevus. Nevus (or naevus, plural nevi, from nævus, Latin for birthmark is the medical term for sharply-circumscribed and Chronic lesions of the
- Cyst, the accumulation of fluid in a closed structure. A cyst is a closed sac having a distinct membrane and Division on the nearby tissue. Breast cysts are a typical example. A breast Cyst appears as a lump the Breast, is often painful and may be worrisome but is generally Benign.
- Hemorrhage in a closed structure. Bleeding, technically known as hemorrhaging / haemorrhaging (see American and British spelling differences) is the loss of Blood from
Other forms of swelling are part of the normal functions of the body and may or may not be included as causes of tumor. Examples include enlargement of the uterus in pregnancy and erection of the penis. The uterus (from the Latin word for womb) is the major Female reproductive organ of most Mammals including Humans One end the Pregnancy ( Latin graviditas) is the carrying of one or more offspring known as a Fetus or Embryo, inside the Uterus of a Female The erection of the Penis, Clitoris or a Nipple is its enlarged and firm state The penis (plural penises, penes
References© 2009 citizendia.org; parts available under the terms of GNU Free Documentation License, from http://en.wikipedia.org
network: | |