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NBME 24 Answers

nbme24/Block 2/Question#23 (29.7 difficulty score)
A 9-year-old boy who was adopted from an ...

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submitted by brethren_md(94),
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Vitaimn 2B1 is teh rsocadrtit ni sith unosiqet esbeuac it losa saceus a beaob-dr,ads aactix gtai nad descreea in ti.oirabnv utB - itVmian 1B2 lwil not vhae tsomsmpy kiel Hmyltcoei aimenA reeascd(de mehb,oionlg endsciear L.DH) itanmiV E = ,waesnr ees boelw fro an.nltepoxia

gonyyong  Also the MCV was normal, not megaloblastic like you would see in B12 deficiency +8  

submitted by dbg(166),
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FWT is see"skwan of atarpnl frnolxi"deios ????? i'st like igsnay xnetsonie" o"xesTilfnh i si otn the yonl oobuisv leaiccnth msiaetk ni eht new sBNEM ...

karthvee  loool +2  
yex  Funny Board!! Yeahhhhh +  

submitted by karljeon(123),
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iintmaV E iyidneccef caesus elociythm eanim,a tcoh,siysatonca mecsul enwsa,kes toosrrpei uclonm dna plieolrscarnbee ctart amteionlydnie.

karljeon  Can anyone explain why the serum lactate dehydrogenase (LDH) level was elevated? +  
asapdoc  Vitamin E is an antioxidant. Thus a deficiency can cause hemolytic anemia. +6  
sympathetikey  @karljeon Intravascular hemolysis = LDH release from RBCs +4  

submitted by aisel1787(5),
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ujts orf otaiddin - eehr MCV si m,ronla in B12 eycncideif ti si hhig

submitted by abhishek021196(78),

Vitamin E Deficiency - Hemolytic anemia, acanthocytosis, muscle weakness, demyelination of posterior columns (Decreased position and vibration sensation) and spinocerebellar tract (ataxia).

Neurologic presentation may appear similar to vitamin B 12 deficiency, but without megaloblastic anemia, hypersegmented neutrophils, or increased serum methylmalonic acid levels.