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Retired NBME 21 Answers

nbme21/Block 4/Question#15 (reveal difficulty score)
A 5-year-old boy is brought to the physician ...
Lack of choroidal pigment deposition in the macula 🔍 / 📺 / 🌳 / 📖
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 +32  upvote downvote
submitted by henoch280(70)
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emtmy.@ sTih tinuseoq ssett ruo geekoldwn no baiimlns whcih is lylnmora a asrnteisyo yccneefidi aesedsi but the egvtietn atstes ttah eht y'sbo nabmisli si adsecu yb a ectgeni uamtinto in teh T1RPY gene hcihw si whosn ni eth eoimchbalic yhpawt.a A eegn tath heslp in eth hessnitys of miE.ueanln

woN ouy vhea to daustnerdn thta all cusrosperr erbfeo that neeg is hte ayphtwa uodwl lilst eb laabviale fi nto ieadrcsne chhwi aekm 2 of the sonitpo ni hte tnisquoe wn.org

oyu also avhe to seaurddtnn a(u:)nshlim eEtin = a(olinomnr)emn .ie rlmaon nlmneia cwhhi is veptceitor to het ,nkis drseesace eivartce enoyxg iscsepe dan igvse het rdak eitsnmpg ot het rsi,i ,cdohrio kis,n iahr n.iltl.eewmfeci )an eho.( = )nmklenef(iaa i.e npeoeim,lhan het eno eptnser in uor ettinpa hree iwchh si slse tptevrcieo ginaa the uv a,ysr ocntan inpemgt nad tncoan eeecdras RSO rneaetged ni eht i.nski phoe hits hples

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 +4  upvote downvote
submitted by cantaloupe5(87)
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erPscocs of innitaemiol fro this .noe Two oyu nca tielmanie eydeammtlii sujt rfmo nolikog at eht bahmciicelo apwhaty raht.c ehT oerth two qdeurier ldogeknew atth leniuanem is emro ivcreoettp htna oipalnenehm hsit( is ywh eddresha urbn roem )laesiy. ceBuaes eonnelmhapi si sesl ,oietcprtev ereth dwluo be mero otn slse ROS rfmo hntliug.s

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temmy  i 'dont dtuadrsenn hsti ta lla. i am etplcmyole paeeblk.sn.la. leph +3
henoch280  me.mt@y hsiT oisqeunt stets rou wkgoelnde on animbsli hicwh is oarlymln a seoatrsyin ecifidenyc esidesa ubt teh gtnietev eststa ttha the 'bosy iamnbsil si duacse yb a citeeng aimtuton ni hte YR1PT enge hiwch is sowhn in eth accliomiebh .thawpay A egne atth esphl in eth yishsnets of .imnaN olwuneE you ahve to ndsuderant taht lla spucrrerso ferbeo tath geen is eht tahapyw wdluo itlsl be aiabeavll fi otn sereiacnd hwchi keam 2 of het osnipot in het ntiueoqs wygnruoo. asol ahev to tresndndau lmhnnis)(it:a Eue = mn)ielnoamnro( ie. mnarol lanenmi ihchw si ictvepetor to hte i,skn ssedecaer iaeecrtv onyegx icpsese and eisvg eth kdar gtnpeims to eth ii,sr croh,odi ,knsi riah a me.i(hnwo)lftence.il e. = nk)eminlef(aa i.e n,oeihenamlp the one rsptene in ruo itaetpn reeh iwhhc si lsse tceprtoeiv gania the vu r,sya ctnoan tmigpne dna antonc aeceerds ORS rnatdegee in hte ii .skn peho this pshel +32
eacv  c028@ohhne thnka u vyer hmuc! I got ti rtgih yb kucl utb nwo i od tsrudedann D: +



 +4  upvote downvote
submitted by drfish(4)
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I levibee shti one asw tsuj an wsaren fo coiulsexn / srcsoep of inntmliio.ae oYu had to ndsetaudrn atht eth ohtevetcrtipoop omfr of laimnen is eht abckl eon (lamnuenei) dna yeimltnaonhp )(edr is sels hovpitocpere.tot moFr erteh it lcalysabi si ysnagi a meepoclt lsso fo nnftuico intautom fo TPR.Y1

  • eAsecbn fo irsynoteas ech(cio A) is essedrnmyeonaiia—ittl is wya tpsremua fo .YPTR1

  • eaedDercs recntnsociotan fo ,56 (chcoei B) is naliiedetm einsc erteh uoldw eb iaedsrenc sbtertaus fo 1T.RYP

  • sraedecDe ORS c(ocehi )C dna edcsnarei rpnhotooipteotc cio(hec )D rea ienetamdil beaucse rehet is sels ooptehtnpioctor ormf het loss fo nlaneumie = aecsrdein .OSR

lpnrAatpye doralohic ptmeign si made of thaylpeoinnm but on yaw oyu reew xceepetd to nkow .atth

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 +1  upvote downvote
submitted by sweetmed(157)
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lennumiaE aslo hplse eht rodocih mtili nodtlreculno erlncfieto wniiht the yee atth wdolu plntiyealto tulrse ni eth ertppeionc fo nciufonsg mieag

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 +1  upvote downvote
submitted by sahusema(173)
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I utc onep na blyaele ecno adn I wsa idrrsusep owh desne kaclb hte elaitarm ndeiis aws. hatT upls poscsre fo nioaenmitil orgbhut me to the thgir rawsen

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