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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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memt.y@ Tsih inesotqu setst uor ndkogewle on ilbinmas chwhi si nolaymlr a eriosnsayt dcneefiicy idesaes but het inttgeve tasset atth eht by'os aisilnbm is csuade by a entgcie omttniau ni het RPY1T egne wcihh si owhns ni het hmaoielbcic hapy.twa A neeg thta hples in hte ysteshsni of imu.lanenE

wNo you eavh to dndetrunsa that all rucorressp erfbeo htta ngee is eth waythap duwol tlils eb lavbaalei if nto aieensrdc ichhw amek 2 of the ootnisp ni the qtsuoeni ngor.w

you oasl evha to dnneuasrdt eumint Eln:aih)(s = )earminmln(noo ie. anrlmo neniaml ihchw si tcvpioetre to the nki,s seesraecd etaecriv eygxon sseipec and vegis eht drak sgmtpein to het i,isr o,odrihc ins,k rhia (ah.weee nimc.e it).nfllo = )ei(almknfnae e.i a,meeilnponh eth eon eensptr in oru ttpeian here hwhci si ssle rveeoitpct niaag the vu ,arsy ncoatn emptnig dan nnotca rseecead ROS rnegeadte in teh ki.s in ohpe sith hplse

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 +4  upvote downvote
submitted by cantaloupe5(87)
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ssePrcoc of nnoatiieiml rof thsi oe.n woT uyo can eietminla yemmdltieia tujs romf igolkno ta het cmaeichiobl ptyahwa htrca. The erhot otw eqredrui wdkegleon taht ueinleamn si oemr tvrtceoepi naht neimnoplhae is(th si hyw hedrdaes rubn ermo laysei). aBuscee nhapenmeloi is sles ,ittecoerpv etreh lowud be rmeo ton sles ROS omfr t.ghsnlui

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temmy  i n'otd nsdateudnr hist ta a.ll i am clmoytlepe lka..alebpe.sn lhep +3
henoch280  .t@emmy sTih uiesntoq tsets uor eoglkewnd on iabmlnsi wchih si yromalln a iyaoertssn fcyindieec esiesda but the evttnieg ttssea taht eht 'soby anibmsil si cuesad yb a iteegcn uaniotmt in teh RPY1T eeng chihw si whson in hte comeiiablch hwyapat. A eegn atth hpesl ni teh nseshiyts fo iwnenal.uoNEm uoy vhae ot datunsdenr atth lla pscrrorues erofbe that eneg is het yhwatap luwdo lslti be abiaelval fi nto esarcdnei whihc ekma 2 fo the oionpts in eht qsneiuto .g ywoorun soal haev to atndurndse il(nEs euh:in)tma = elmonirnm(o)an .ei oalnrm inmealn hwhic is ioeepcttrv to the ,snki sceedaser tvericae xgyoen sspeice dan evgis hte adrk esginptm to het rii,s odroc,ih i,snk airh elelei io ecn)..hmw(nf.ta = nlamae)nfe(ki i.e ealm,ephnino teh oen eptsrne ni rou iatptne hree hchwi si slse citpevteor agnai het uv ays,r nnoatc ipnetgm adn ncatno csearede ORS egenrdtea in hte . ksini pheo sith shlep +32
eacv  c0onh@28eh anhtk u yevr cmhu! I tgo ti tigrh yb kucl ubt now i od tredusnnda :D +



 +4  upvote downvote
submitted by drfish(4)
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I eieblve sthi neo was sutj na rasenw fo exnsoculi / scepros of iiimnt.oealn oYu had ot sedndartnu htta het eoitooervphcptt mrfo of imnnlea si teh albkc eno (unilneame) dan ytimlnaephno re(d) is less o.ocpettthiopver rFmo htere ti iacbyllas is snyiga a lemctpeo sosl of itunfocn utoanmti fo .TYRP1

  • nbesceA of rsnsaoetyi oi(hcce )A is ernitasl—tosdiieyname si wya upetamsr of .PT1YR

  • deacDerse tcnnoceotranis of 6,5 cco(hei )B si diiamlenet cenis erteh uwdlo eb saeenicdr ubrasetts fo 1PRT.Y

  • eeDdecasr SOR cc(ehio C) nda nsecdaeir ohoootnitrteppc hcce(io D) ear edliaitmne easbuce ereht is elss cteporoiohtpont mfor teh sols fo liaumneen = idesnaecr S.RO

Aypletranp ihadorlco tpmgnei si dmea of yailhponemnt but on way uyo eerw tcxepdee to wnok .htat

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 +1  upvote downvote
submitted by sweetmed(157)
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lannuEiem aslo phsel teh odrcoih iimlt collndntureo tencofierl ntihiw eht yee htta owdlu oaiylltetpn utlser ni eht inreeptopc of fcnngsoiu ageim

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 +1  upvote downvote
submitted by sahusema(173)
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I cut nope na elabyel oenc adn I swa rpseusidr ohw sdene bclak eth iltemraa siidne .asw Ttah upsl ocrpess of iietimnoanl rubthgo em ot eht itrgh esanwr

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