Category: B
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Base hospital
An institution for treatment of the sick and injured. A hospital unit within the lines of an army that receives wounded and sick patients from the front line.
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Bioidentical synthetic hormone
A compound extracted from plants or formulated in the laboratory and used to replace or increase concentrations of hormones found in the body. The most commonly manufactured and marketed BSHs are the sex steroid hormones (estrogen, progesterone, and testosterone).
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Black tar heroin
A form of illicitly manufactured diacetylmorphine known for its tarry appearance and increased potency relative to “white” heroin.
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Bladder hernia
The protrusion of the bladder or part of the bladder through a normal or abnormal orifice.
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Bilateral hermaphroditism
A condition in which an ovary and testicle are present on both sides.
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Bitemporal hemianopia
Blindness in the temporal half of the visual field in each eye.
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Binasal hemianopia
Blindness in the nasal half of the visual field in each eye.
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Backward heart failure
Heart failure in which blood congests the lungs, and often the right ventricle, liver, and lower extremities.
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Boatshaped heart
A heart in which one ventricle is dilated and hypertrophied as a result of aortic regurgitation.
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Beriberi heart
Heart failure caused by thiamine (vitamin B1) deficiency (e.g., in patients with chronic alcoholism or malnutrition).