(Adjective) a non-native plant taxon intruding into, and spreading in, areas to which it is foreign.
Having the quality of invasiveness.
Involving puncture or incision of the skin or insertion of an instrument or foreign material into the body; said of diagnostic techniques.
According to the National Invasive Species Information Center: “An ‘invasive species’ is defined as a species that is (1) nonnative to the ecosystem under consideration and (2) whose introduction causes or is likely to cause economic or environmental harm or harm to human health. (Executive Order 13112). . . .Human actions are the primary means of invasive species introductions.”
Referring to cancer which tends to spread throughout the body.
Referring to an inspection or treatment which involves entering the body by making an incision.
General descriptive term for something that tends to spread or intrude into its surroundings, such as cancer or a tumor. In relation to medical tests, the term invasive describes a procedure that involves “breaching the body’s defenses.” It is generally used to refer to tests in which foreign substances are introduced by a potentially risky procedure, as when a dyed fluid is injected into the body by way of a lumbar puncture in a myelogram. A simple procedure such as inserting a needle into a child’s arm to take a blood sample can also be regarded as invasive. In most medical establishments in the United States, where standards of hygiene are high and needles are either new and sterile or carefully sterilized, there is little risk from the taking of a blood sample. But where needles are reused without being carefully sterilized, even the seemingly simple puncture of a needle can lead to serious infection—deadly in the case of aids. By contrast, an ultrasound scan would be regarded medically as noninvasive, because nothing is injected or ingested into the body.
Marked by a tendency to spread, especially into healthy tissue, such as invasive cancer. In reference to medical procedures, one in which a body cavity is entered, such as with a needle.
A term describing a diagnostic or therapeutic procedure or technique which requires penetration of the skin or mucous membrane, either by incision (cutting) or insertion of a needle or other device. A biopsy (removing a portion of tissue for examination and analysis) is invasive, as is the removal of a specimen of blood.
Tending to spread, especially the tendency of a malignant process or growth to spread into healthy tissue.
A descriptive term used to indicate the extension of thymoma beyond the external boundary of the thymus gland.
“Invasive” is a term employed to depict something that penetrates or extends into the body by force. Typically, this descriptor is used for cancerous tumors or detrimental microorganisms that possess the tendency to propagate within bodily tissues. It can also pertain to surgical procedures. In the context of a medical procedure described as “invasive,” instruments penetrate body tissues during surgery.