| TCL | T-cell leukemia; thermochemiluminescence; total capacity of the lung; transverse carpal ligament |
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| RAD | radial artery catheter; radiation absorbed dose; radical; radiography or radiographic; reactive airw... |
| RAI | radioactive iodine; radioactive isotope; resident assessment instrument; resting ankle index; right ... |
| RAR | rapidly adapting receptor; rat insulin receptor; retinoic acid receptor; right arm reclining; right ... |
| RB | radiation burn; rating board; rebreathing; reticulate body; retinoblastoma; right bronchus; right bu... |
| right lymphatic duct | One of the two terminal lymph vessels, a short trunk, about 2 cm in length, formed by the union of the right jugular lymphatic vessel and vessels from the lymph nodes of the right superior limb, thoracic wall, and both lungs; it lies on the right side of the root of the neck and empties into the right brachiocephalic vein. Synonym: ductus lymphaticus dexter, ductus thoracicus dexter. (05 Mar 2000) |
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| right main bronchus | It arises at the bifurcation of the trachea and enters the hilum of the right lung, giving off the superior lobe bronchus and continuing downward to give off the middle and inferior lobe bronchi. It is shorter, of greater caliber, and more nearly-vertical than the left main bronchus, thus, aspirated objects more frequently lodge on the right side. Synonym: bronchus principalis dexter. (05 Mar 2000) |
| right margin of heart | The border between the sternocostal and diaphragmatic surfaces of the heart; it is fairly well defined in fixed hearts but is rounded and indefinite in the living heart. Synonym: margo dexter cordis, right margin of heart. (05 Mar 2000) |
| right middle lobe syndrome | <radiology> Controversial, associated with asthma, cough, wheezing, recurrent pneumonia, XR findings: total or partial RML atelectasis, with or without bronchial narrowing (12 Dec 1998) |
| right or left lateral decubitus film | A radiograph exposed with the subject in the decubitus position; named for the side that is dependent. Synonym: right or left lateral decubitus film. (05 Mar 2000) |
| right ovarian vein | <anatomy, vein> Begins as the pampiniform plexus at the hilum of the ovary and opens into the inferior vena cava. Synonym: vena ovarica dextra. (05 Mar 2000) |
| right ovarian vein syndrome | <syndrome> A condition characterised by intermittent abdominal pain due to ureteral compression by the right ovarian vein, occurring with most frequency on the right side, and thought to be due to aberrant crossing of the right ovarian vein over the ureter, generally at the level of the first sacral vertebra; dilation of the ovarian vein during pregnancy and unilateral ptosis of the kidney are thought to be contributing factors leading to intermittent ureteral obstruction and recurring bouts of pain and pyelonephritis. (05 Mar 2000) |
| right parasternal impulses | Cardiac activity as palpable or recordable just to the right of the sternum. (05 Mar 2000) |
| right part of diaphragmatic surface of liver | The part of the diaphragmatic surface of the liver deep to the bodies of the lower ribs on the right side. Synonym: pars dextra faciei diaphragmaticae hepatis. (05 Mar 2000) |
| right pulmonary artery | <anatomy, artery> The longer of the two terminal branches of the pulmonary trunk, it passes transversely across the mediastinum passing inferior to the aortic arch to enter the hilum of the right lung. Branches are distributed with the bronchi; frequent variations occurs. Typical branches to the superior lobe (rami lobi superioris ) are apical (ramus apicalis ), anterior ascending (rami anterior ascendens ), anterior descending (ramus anterior descendens ), posterior ascending (ramus posterior ascendens ), and posterior descending (ramus posterior descendens ); to the middle lobe (rami lobi medii ) are medial (ramus medialis ) and lateral (ramus lateralis ); and to the inferior lobe (rami lobi inferioris ) are superior (apical) branch of inferior lobe (ramus superior (apicalis) lobi inferioris ), and the anterior, lateral (lateralis), medial (medialis) and posterior basal branches (rami basalis). Synonym: arteria pulmonalis dextra. (05 Mar 2000) |
| right sagittal fissure | A sagittal groove on the undersurface of the liver formed by the fossa vesicae felleae anteriorly and the sulcus venae cavae posteriorly. (05 Mar 2000) |
| right splicing junction | Boundary between the right end of an intron and the left end of the adjacent exon. Synonym: acceptor splicing site. (05 Mar 2000) |
| right superior intercostal vein | <anatomy, vein> A tributary of the azygos vein formed by the union of the right second, third, and fourth posterior intercostal veins. Synonym: vena intercostalis superior dextra. (05 Mar 2000) |
| right superior pulmonary vein | <anatomy, vein> The vein returning oxygenated blood from the superior and middle lobes of the right lung to the left atrium. Synonym: vena pulmonalis superior dextra. (05 Mar 2000) |
| right suprarenal vein | <anatomy, vein> The short vein that passes from the hilum of the right suprarenal to the inferior vena cava. Synonym: vena suprarenalis dextra. (05 Mar 2000) |