Dissecting aneurysm
Dissecting aneurysm: An aneurysm in which the wall of an artery rips (dissects) longitudinally. This occurs because bleeding into the weakened wall splits the wall. Dissecting aneurysms tend to affect the thoracic aorta. They are a particular danger in Marfan syndrome.
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- Dissection
Dissection: The process of cutting apart or separating tissue as, for example, in the study of anatomy or in the course of a surgical procedure.
- Dissection, axillary
Dissection, axillary: Surgery in which the axilla (the armpit) is opened — to “dissect” means to “cut apart” — in order to identify, examine, and sometimes remove structures such as lymph nodes or other tissue for diagnosis or treatment.
- Dissection, neck
Dissection, neck: Surgery in which the neck is opened — to “dissect” means to “cut apart” — in order to identify, examine, and sometimes remove structures such as lymph nodes or other tissue for diagnosis or treatment. A radical neck dissection involves removal of a tumor from the neck with an additional margin of apparently […]
- Dissociation
Dissociation: In psychology and psychiatry, a perceived detachment of the mind from the emotional state or even from the body. Dissociation is characterized by a sense of the world as a dreamlike or unreal place and may be accompanied by poor memory of specific events.
- Distal
Distal: The more (or most) distant of two (or more) things. For example, the distal end of the femur (the thigh bone) is the end down by the knee; the end more distant from the torso. The distal bile duct is the far end of the cystic duct, the end away from the gallbladder. And […]