| nasal septal cartilage | A thin cartilaginous plate located between vomer, perpendicular plate of the ethmoid, and nasal bones, and completing the nasal septum anteriorly. Synonym: cartilago septi nasi, cartilage of nasal septum, cartilaginous septum, pars cartilaginea septi nasi, quadrangular cartilage, septal cartilage. (05 Mar 2000) |
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| bowel perforation | Complete penetration of the intestinal wall resulting in the potential for bacterial contamination of the abdominal cavity (peritonitis). (27 Sep 1997) |
| Boyd communicating perforation veins | A vein connecting the superficial and deep venous system in the anteromedial calf. (05 Mar 2000) |
| retinal perforation | <ophthalmology> Perforations through the whole thickness of the retina including the macula as the result of inflammation, trauma, degeneration, etc. The concept includes retinal breaks, tears, dialyses, and holes. (12 Dec 1998) |
| peptic ulcer perforation | Penetration of a peptic ulcer through the stomach wall. May be free, i.e., at a point where the stomach wall faces a real or potential space,, or confined, i.e., at a point where the stomach wall is defended by contiguous or adjacent structures, such as the pancreas. (12 Dec 1998) |
| perforation | 1. The act of boring or piercing through a part. 2. A hole made through a part or substance. Origin: L. Perforare = to pierce through (18 Nov 1997) |
| intestinal perforation | <surgery> This surgical emergency involves rupture of the wall of the intestine. Intestinal perforation results in severe abdominal pain intensified by movement. Later symptoms include fever and chills. Underlying causes include appendicitis, gastrointestinal cancer and diverticulitis. (10 Jan 1998) |
| oesophageal perforation | <radiology> Usually in neonates, upper oesophagus frequently affected, then NG tube dissects posteriorly, relatively benign in neonates CXR findings: pneumothorax, pneumomediastinum, abnormal distance between NG tube and trachea on lateral view, NG tube does not terminate in stomach, thin irregular tract (with contrast) vs. Large regular tract (tracheo-oesophageal fistula), pleural effusion, patchy infiltrates see: oesophageal trauma (12 Dec 1998) |
| tympanic membrane perforation | An opening in the tympanic membrane usually caused by trauma. There are four general categories: compression injuries (the most common and usually the result of a blow to the ear); instrumentation injuries (the second most common, usually inadvertent, caused often by cotton swabs or bobby-pins); burn-slag injuries (frequently seen in industry, from hot metal from machines or welding); and blast injuries (usually seen during war or as a result of terrorist bombing). In the absence of infection, most traumatic tympanic membrane perforations heal spontaneously. Persistent perforation is usually a manifestation of tubotympanitis, an inflammation of the eustachian tube and tympanic cavity (middle ear). (12 Dec 1998) |
| uterine perforation | Penetration through the uterine wall. (12 Dec 1998) |
| aortic septal defect | A small congenital opening between the aorta and pulmonary artery about 1 cm above the semilunar valves, e.g., aorticopulmonary window. Synonym: aorticopulmonary window. (05 Mar 2000) |
| aortopulmonary septal defect | A congenital anomaly in which there is abnormal communication between the ascending aorta and pulmonary artery just above the semilunar valves. (12 Dec 1998) |
| atrial septal defect | <cardiology> An inherited condition where there is nonclosure of the foramen ovale at birth, resulting in congenital heart disease. Usually asymptomatic until the third or fourth decades of life. Symptoms include exertional shortness of breath, fatigue and palpitations. Acronym: ASD (12 Jan 1998) |
| ventricular septal defect | <cardiology, embryology> A congenital heart defect where an abnormal opening exists in the ventricular septum. Blood flows from the higher pressure left ventricle (through the defect) into the right ventricle. (12 Jan 1998) |
| ventricular septal rupture | Rupture of the intraventricular septum of the heart, usually secondary to myocardial infarction. (12 Dec 1998) |