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Aagenaes syndrome Aaron sign Aarskog syndrome (Aarskog-Scott syndrome, facial-digital-genital syndrome) Aase-Smith syndrome Abadie sign Abbe apertometer Abbe apparatus Abbe condensor (illuminator) Abbe flap (Abbe-Estlander procedure) Abbe law of diffraction Abbe limit Abbe operation Abbe ring Abbe string method Abbe test plate Abbe-Estlander procedure Abbe-Zeiss apparatus (counting chamber, Thoma-Zeiss chamber) Abbey salt Abbott approach (Abbott-Carpenter approach, Brackett-Osgood approach, Putti technique) Abbott artery Abbott method Abbott paste Abbott stain Abbott tube Abbott-Fisher-Lucas procedure Abbott-Gill osteotomy Abbott-Lucas technique Abbott-Rawson tube Abbott-Saunders-Bost arthrodesis Abdallat-Davis-Farrage syndrome Abderhalden test Abderhalden-Kauffman-Lignac syndrome Abegg rule Abel bacillus Abercrombie degeneration Abernethy fascia Abernethy operation Abernethy sarcoma Abeshouse triad Abney effect Abney law Abouker stent complex Abraham-Pankovich technique (V-Y repair) Abrahams sign Abram modification Abrams needle Abrams reflex Abrams test Abrams treatment Abrams-Griffiths nomogram abreuography Abrikossoff tumor (myoblastoma) accessory ligament of Henle (lateral) (temperomandibular ligament) accessory ligament of Henle (medial) (sphenomandibular ligament) accessory portal system of Sappey Ace-Colles fixator Ace-Fischer frame Achalme bacillus Achard syndrome Achard-Thiers syndrome (diabetic bearded woman syndrome) Achenbach syndrome Achilles bulge sign (heel-cord sign) Achilles reflex (jerk) Achilles squeeze test Achilles tendon Achterman-Kalamachi classification Achucarro stain Ackerman syndrome (taurodontism) Acosta disease Acree-Rosenheim test Acrel ganglion Adair Dighton syndrome Adam operation Adamantiades-Behcet syndrome Adamkiewicz cell Adamkiewicz reaction AdamÕs apple Adams clasp Adams saw Adams suspension wires Adams test Adams test (forward bending test) Adams-Foley disorder Adams-Kershner disease Adams-Oliver syndrome Adams-Stokes syncope (Adams-Stokes attacks; Morgagni-Adams-Stokes syncope) Adams-Stokes syndrome Adams-Victor-Mancall syndrome (central pontine myelinosis) adamsite Addis count Addis test Addis test (method) Addison anemia Addison disease Addison keloid Addison line (transpyloric line) Addison pill Addison planes Addison point Addison-Hunter disease Addison-Schilder disease Addison-Scholz disease Addisonian crisis (Bernard-Sergent syndrome) Adelaide scale Aden fever (disease) Aden ulcer adenocarcinoma adhesions Adie syndrome (Holmes-Adie disease, Markus disease, tonic pupil, Weill-Reys disease) Adie syndrome (partial) [Argyll-Robertson nonluetic syndrome] Adie-Critchley syndrome (Fulton syndrome) Adler reaction Adler test Adler theory Adlerian psychology (individual psychology) Adrian mixture Adson hemostatic forceps Adson maneuver Adson maneuver (modified) Aebi-Etter-Coscia fixation Aeby division Aeby plane African coast fever (Rhodesian fever) African siderosis African sleeping sickness (African trypanosomiasis) African swine fever African tapeworm African tick fever African tick typhus (Indian tick typhus, Marseilles fever, Mediterranean spotted fever) African trypanosomiasis Afzelius disease (erythema chronicum migrans, Lipschutz disease, Lyme disease) Agnell rule Agnew splint Agostini reaction (test) AguecheekÕs disease Ahlback changes Ahlfeld sign (breathing movements) Ahumada-Del Castillo syndrome Aicardi syndrome Aicardi-Goutieres syndrome Aich metal Aiello test Aiko-Okamato rat air of Hales Aitken classification Aitkin operation Akerlund deformity Akin procedure Al-Cal˜ syndrome Al-Ghorab procedure Alagille syndrome Alajouanine syndrome Alajouanine-Foix syndrome Aland disease Alanson amputation Albarran disease Albarran gland Albarran test Albee fusion(Albee-Delbet operation) Albee operation Albee procedure Albers-Schšnberg disease Albers-Schšnberg disease (type 1) [osteopetrosis] Albers-Schšnberg disease (type 2) Albert achillodynia Albert disease Albert disease (Schanz disease) Albert operation Albert position Albert stain Albert suture Albert-Lindner bone sectioning Albini nodules Albinus muscle Albrecht bone (basiotic bone) Albright anemia Albright disease (Albright-McCune disease, Albright-McCune-Sternberg syndrome) Albright hereditary osteodystrophy Albright solution Albright syndrome Albright-Chase resection Albright-Hadorn syndrome Alcian blue Alcock canal Alder sign Alder-Reilly anomaly Alder-Reilly granules Aldor method Aldrich syndrome Aldrich-Mees lines Aleppo boil (button, disease, evil, pustule, ulcer; Bagdad boil, cutaneous leishmaniasis, Lahore sore) Aleutian disease Alexander disease Alexander disease (factor VII deficiency, proconvertin deficiency) Alexander disease (leukodystrophy) Alexander hearing loss Alexander law Alexander method Alexander paste Alexander position Alexander technique Alexander view Alexanderism (agriothymia ambitiosa) Alezzandrini syndrome Alfidi syndrome (renal splanchnic steal syndrome) Alfraise test Alfven instability Alfven velocity Alfven waves Alibert disease Alibert disease (false keloid, Hawkin disease) Alibert keloid Alibert-Bazin disease Alibert-Bazin disease (Auspitz syndrome, mycosis fungoides, Vidal-Brocq syndrome) Alice in Wonderland syndrome (Todd syndrome) Alius-Grignaschi anomaly Allan-Herndon syndrome Allcock test Allemann syndrome Allen cards Allen intestinal anastomosis clamp Allen maneuver Allen paradoxic law Allen reaction (test) Allen stirrups Allen test (radial compression test) Allen treatment Allen-Brown criteria Allen-Doisy test Allen-Doisy unit Allen-Hines syndrome Allen-Masters syndrome (universal joint syndrome) Allgrove syndrome (addisonianÐachalasia syndrome, 3A syndrome) Allingham plug Allingham ulcer Allis method Allis sign Allis-Thoms tissue forceps (nontoothed) Allison operation Allison syndrome Allison-Millar classification Allman classification Allport A-S reaction study Allport-Vernon study of values Allport-Vernon-Lindzey study of values Almeida disease Alouette amputation Alper test Alpers disease Alpers syndrome (Christenson-Krabbe disease) Alpers-Huttenlocher syndrome Alport syndrome (Dickinson syndrome) Alsberg angle (angle of elevation) Alsberg triangle AlseverÕs solution Alstršm syndrome Altamira disease Altemeier procedure Althausen test Altherr syndrome Altmann granule Altmann stain Altmann-Gersh stain Alton giant Alzheimer cells Alzheimer disease Amapari virus Amato body American hookworm American tarantula American trypanosomiasis Ames demonstration Ames test Amici disk (Amici line, Dobie line, intermediate disk, Krause membrane) Amies medium Amish albinism Ammon fissure Ammon horn Ammon operation amniotic infection syndrome of Blane Amoss sign Ampere postulate (law) Amplatz coronary catheter Amplatz dilators Amplatz sheath ampulla of Thoma ampulla of Vater Amsler chart Amsler marker Amspacher-Messenbaugh osteotomy Amsterdam criteria Amsterdam dwarf Amstutz-Wilson osteotomy Amussat operation Amussat valves Anagnostakis operation Ancell disease (Ancell-Spiegler disease, turban tumors) Andermann syndrome (Charlevoix syndrome) Andernach ossicles (wormian bones) Anders disease Andersch and Gibson test Andersch ganglion Andersch nerve Andersen disease Andersen syndrome Anderson disease (familial osteodysplasia) Anderson disease (hypobetalipoproteinemia) Anderson grind test (mediallateral grind test) Anderson phenomenon Anderson procedure Anderson-Adson scalp retractor Anderson-DÕAlonzo classification Anderson-Fowler procedure Anderson-Hutchins procedure Anderson-Pindborg syndrome Andes disease Andogsky disease AndrŽ Thomas sign Andrade indicator Andrade syndrome Andrade-MacNab procedure Andre Thomas sign Andresen appliance Andrew syndrome Andrew- Minneapolis hemoglobin Andrew-Minneapolis hemoglobin Andrews maneuver Andrews procedure Andy Gump deformity Anel probe Angelchik device Angelman syndrome (happy puppet syndrome) Angelucci syndrome Anger camera Anghelescu sign Angle classification angle of Boogaard angle of His angle of Louis (sternal angle) angle of Ludwig angle of McRae angle of Rolando angstrom unit Anitschkow myocytes Ann Arbor classification Anrep effect (homotropic autoregulation) Ansbacher effect Ansbacher unit Anstie test anterior knee of Willebrand Anthony stain anti-Monson curve (reverse curve) Antigone complex Anton disease Anton syndrome (Anton-Babinsky syndrome) Anton test Antoni patterns A and B antrum of Willis anus of Rusconi Anzio effect Apak syndrome (X-linked cerebellar ataxia) Apathy medium (gum syrup medium) Apert syndrome Apert-Crouzon syndrome Apert-Gallais syndrome Apgar score Apley law Apley scratch test Apley sign Apley test apophysis of Ingrassia apophysis of Rau apparatus of Goormaghtigh Appelt-Gerken-Lenz syndrome appendectomy Appolito suture Appunn lamella Appunn tonometer Apt test aqueduct of Cotunnius aqueduct of Sylvius (midbrain aqueduct) Arakawa test (reagent) Aran law Aran-Duchenne disease Arantius ligament Arantius nodule (Bianchi nodule, Morgagni nodule) Arantius ventricle arc of Riolan arcade of Frohse arcade of Struthers arch of Corti Archer disease Archetti test Archibald sign Archimedes principle Arctic anemia area of Laimer Argand burner Argentinian hemorrhagic fever Argonz-Del Castillo syndrome Argyll Robertson pupils Arias syndrome Arias-Stella phenomenon (effect, reaction) Aries-Pitanguy mammaplasty Arieti-Gray disease Arion sling Aristotle illusion (anomaly experiment; tactile diplopia) Arizona hinshawii Arizona support Arkin disease Arkless-Graham syndrome (acrodysostosis, Maroteaux-Malamut syndrome) Arloing-Courmont test Arlt disease Arlt operation Arlt sinus Arlt-Davidsen syndrome Armanni-Ebstein kidney (nephropathy) Armendares syndrome Armstrong acromionectomy Armstrong procedure Arnason syndrome Arndt-Gottron syndrome (scleromyxedema) Arneth count Arneth group Arnold bodies Arnold brace Arnold bundle Arnold canal Arnold ganglion (otic ganglion) Arnold head Arnold ligament Arnold nerve Arnold neuralgia Arnold Pick syndrome Arnold-Chiari malformation (type I) [Celand-Arnold-Chiari malformation, adult-type] Arnold-Chiari malformation (type II) Arnold-Chiari malformation (type III) Arnold-Lipliawski test Aronson-Prager procedure Arrhenius acid Arrhenius equation Arrhenius plot Arrhigi point Arroyo sign (asthenocoria) Arruga forceps Arruga procedure arterial circle of Vieussens arteries of Mueller artery of Adamkiewicz artery of Bernasconi and Cassinari (artery of tentorium) artery of Huebner (recurrent artery of Huebner, medial striate artery artery of Percheron artery of Zinn Arthur point scale of performance tests Arthus reaction Arthus-type phenomenon Asboe-Hansen disease ascending veins of Rosenthal Asch operation Asch situation Ascher disease Ascher glass-rod phenomenon Ascher syndrome (Laffer-Ascher syndrome) Ascherson membrane Aschheim-Zondek test Aschner inverted phenomenon (reflex) Aschner phenomenon (reflex) Aschoff node (Aschoff-Tawara node) Aschoff nodule (body) Ascolli test (reaction) Aselli gland Ash system Ashby method (differential agglutination technique) Asherman syndrome Asherson disease Ashhurst classification Ashhurst sign Ashkanazy cells Ashman phenomenon Ashworth scale Asian cobra Ask-Upmark kidney Askin tumor Asnis procedure Asnis screw Asperger syndrome Aspinall progressive tests Aspinall transverse ligament test Assmann disease AssŽzat triangle Astler-Coller classification Astler-Coller classification (modified) Astrup method Astwood test Atkin syndrome Atkin-Flaitz-Patil syndrome Atkins-Wolff procedure Atkinson block Atlanta brace atrophoderma of Pasini and Pierini Atwater factors Aub-Dubois table Auberger blood group Aubert diaphragm Aubert phenomenon Aubert-Fleischel paradox Audouin microsporon Audry syndrome Auenbrugger sign Auer classification Auer rod (body) Auerbach plexus (myenteric plexus) Aufranc-Turner prosthesis Aufrecht sign Auger effect Auger electron Aujeszky disease Auspitz sign Auspitz syndrome Aussage test Austin Flint murmur Austin Flint respiration Austin Moore arthroplasty Austin osteotomy Austin procedure Austin syndrome Australian antigen Australian octopus Australian tick typhus (Queensland typhus) Austrian school of psychology (Graz school of psychology) Austrian syndrome Auth device (Rotablator) Avellino dystrophy Avellis syndrome (Avellis-Longhi syndrome, jugular foramen syndrome) Avogadro law Avogadro number (constant) Axenfeld-Rieger anomaly (Axenfeld syndrome) Axenfeld-SchŸrenberg paralysis AxenfeldÕs conjunctivitis Ayala index Ayer test Ayerza disease Ayerza-Arrillaga disease (Ayerza syndrome) Ayoub-Shklar method Ayre T-piece Azima battery Azimuth resolution (elevation resolution) Aztec ear (Cagot ear) Azua disease Azzopardi-Salvadori classification