Information about Invasive (medical)

The term invasive in Medicine has two meanings:
  • A medical procedure which penetrates or breaks the skin or a body cavity, i.e., it requires a perforation, an incision, a catheterization, etc. into the body
  • An abnormal tissue growth, such as a neoplasm or tumor, that spreads (invades) to the surrounding healthy tissue (usually a malignant one).
Surgery is a typical medical invasive procedure. However, when there is minimal damage of biological tissues at the point of entrance of instrument(s), the procedure is called minimally invasive.

There are also many non-invasive procedures, ranging from simple observation to specialised forms of surgery (e.g., radiosurgery).
Medicine is the science and "" of maintaining and/or restoring human health through the study, diagnosis, and treatment of patients. The term is derived from the Latin ars medicina meaning the art of healing.
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A medical procedure is a course of action intended to achieve a result in the care of patients, used by medical or paramedical personnel.

A medical procedure with the intention of determining, measuring or diagnosing a patient condition or parameter is also called a medical
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Skin layers: epidermis, dermis, and subcutis, showing a hair follicle, sweat gland & sebaceous gland.]] In zootomy and dermatology, skin is the largest organ of the integumentary system made up of multiple layers of epithelial tissues that guard underlying muscles and organs.
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body cavity is any fluid filled space in a multicellular organism. However, the term usually refers to the space, located between an animal’s outer covering (epidermis) and the outer lining of the gut cavity, where internal organs develop.
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Neoplasia (new growth in Greek) is abnormal and purposeless proliferation of cells in a tissue or organ. A neoplastic growth is called a neoplasm. Most neoplasms proliferate to form distinct masses, or tumors
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Tumor or tumour (via Old French tumour from Latin tumor "swelling") is an abnormal growth or mass of tissue. A tumor can be either malignant or benign.
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Malignant (from the Latin roots mal- = "bad" and -genus = "born") is a medical term used to describe a severe and progressively worsening disease. The term is most familiar as a description of cancer.
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surgery (from the Greek χειρουργική meaning "hand work") is the medical specialty that treats diseases or injuries by operative manual and instrumental treatment.
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Biological tissue is a collection of interconnected cells that perform a similar function within an organism.

The study of tissue is known as histology, or, in connection with disease, histopathology.
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Minimally invasive surgical procedures avoid open invasive surgery in favor of closed or local surgery with less trauma. These procedures involve use of laparoscopic devices and remote-control manipulation of instruments with indirect observation of the surgical field through an
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The term non-invasive in medicine has two meanings:
  • A medical procedure which does not penetrate or break the skin or a body cavity, i.e., it doesn't require an (invasive) incision into the body or the removal of biological tissue.

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Radiosurgery is a medical procedure which allows non-invasive brain surgery, i.e., without actually opening the skull, by means of directed beams of ionizing radiation. It is a relatively recent technique (1951), which is used to destroy, by means of a precise dosage of radiation,
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