Category: I
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Imitative synkinesis
An involuntary movement in a healthy or normal muscle accompanying an attempted movement of a paralyzed muscle on the opposite side.
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Imitative syncinesis
An involuntary movement occurring on the sound side when a movement is attempted on the paralyzed side.
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Indirect symptom
A symptom occurring secondarily as a result of a disease in another organ system or body part.
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Impaired swallowing
Abnormal functioning of the swallowing mechanism associated with deficits in oral, pharyngeal, or esophageal structure or function.
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Immunological surveillance
The theory that the immune system destroys some malignant cells as they grow in the body. Support for this theory is found in research data that show tumor cells killed by cytotoxic T lymphocytes, natural killer cells, and perhaps, activated macrophages.
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Intestinal bypass surgery
The production of controlled intestinal malabsorption by surgically short-circuiting the small intestine. This procedure is used to treat massive obesity. It is done by anastomosing the proximal jejunum to the distal ileum by bypassing the small intestine between the anastomotic sites. The lengths of jejunum and ileum involved vary by surgeon. Because of longterm metabolic…
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Image-guided surgery
The use of real-time computed tomography, magnetic resonance imagery, or ultrasound to place surgical instruments in precise anatomical locations (e.g., during biopsies or tissue resections). Images taken before the operation are compared with those obtained during surgery to improve the localization of tumors or vascular structures, the placement of prosthetic parts, or the identification of…
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Intraparietal sulcus
The groove that separates the superior and inferior parietal convolutions.
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Irritable stricture
A stricture causing pain when an instrument is passed.
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Impermeable stricture
A stricture closing the lumen of a tube or canal so that an instrument cannot pass through it.