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rice bodies
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small bodies resembling grains of rice which form in the tendons of joints and in the fluid of hygroma; called also oryzoid b's and corpora oryzoidea.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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Richmond crown
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an artificial crown consisting of a metal base or cap, which fits the prepared face or a stump of a natural root and carries a post or pivot for insertion into the root canal, and a porcelain facing reinforced with metal backing.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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rider's bone
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a localized ossification of the inner aspect of the lower end of the tendon of the adductor muscle of the thigh (adductor tubercle), sometimes seen in horseback riders; called also cavalry b.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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rickettsial endocarditis
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endocarditis caused by invasion of the heart valves with Coxiella burnetii; it is a sequela of Q fever, usually occurring in persons who have had rheumatic fever.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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Ridell operation
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obliteration of the frontal sinus by removal of the anterior wall and floor and sometimes posterior walls of the sinus; for treatment of malignant tumors.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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