Category: D
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Dullness
The state of being dull. Reduced resonance detected during percussion over a region affected by pneumonia, lung collapse, or fluid accumulation in the pleural cavity.
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Duffy system
A blood group consisting of two antigens determined by allelic genes.
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Duet reading
Reading aloud simultaneously by two people, one of whom is learning or relearning to read, and the other who is the teacher or role model.
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Due care
The kind of care that a competent, responsible, and interested provider will give to an individual in need.
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Duct of rivinus
One of 5 to 15 ducts (the minor sublingual ducts) that drain the posterior portion of the sublingual gland.
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Ductogram
Injection of radiographic contrast into a duct of the breast, to determine the cause of nipple discharge.
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Duction
In ophthalmology, the rotation of an eye about an axis. This movement is controlled by the action of the extraocular muscles,
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Ductile
Capable of being elongated without breaking. Able to be extended into a wire-like form.
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Duct ectasia
An inflammatory condition of the lactiferous ducts of the breast. There is nipple discharge, nipple inversion, and periareolar sepsis. This may occur at any age following menarche. The condition resembles carcinoma of the breast.
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Duchenne-Erb paralysis
Paralysis of the muscles of the upper arm due to injury of the fifth and sixth cervical roots, of the brachial plexus. The hand muscles are unaffected.