NBME 23 Serum calcitonin concentration (NBME Answers)

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NBME 23 Answers

nbme23/Block 2/Question#8 (reveal difficulty score)
An 8-year-old boy is brought to the physician ...
Serum calcitonin concentration 🔍 / 📺 / 🌳
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+29
submitted by ∗mousie(263),

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A omahnaegmi is a epty of ingbne crnsnu(eancoo)- otmur in nsfa.tni Tihs anamolrb clretus fo lamls obdlo slveses rpeaspa no or deurn eht ,sink ilpcytyla niwtih neo to etehr sewke rfeat trb.ih - lhnorg.dhatpiwlswies.worciamHo aemgn is a ylV/lBarapic rrbkitmah

+20
submitted by ∗mousie(263),

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aonMfiadr tbahsiu + uMlscoa osnmurea + ckNe asms = MEN B2 (MMP) hP,eo uyadMller drytoih CA (cCoiaitnnl )een,gtirsc oualcms neraomsu

thotcandy I knew it was MEN2B but forgot medullary ca of Thyroid is parafollicular/c cells which means Calcitonin, not T3/T4 Other answers: AntiThyroglobulin: Hashimoto's (or other thyroiditis) Dexamethasone suppression test: positive/suppressed in pituitary adenoma (acth secreting), negative/unresponsive in Adrenal hyperplasia/adenoma (suppressed by high dose) or ectopic acth (unresponsive to high dose) Serum TSH test: for papillary or follicular ca, thyroid adenomas are usually cold but could also cause HyperT TSHR antibodies: graves disease, hyperT +6

+0
submitted by ∗mannan(18),

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Wyh is duralmyle horydit enrcca on eht tlearal ised of het ne??k?c

username I think it is referring to like not in the midline but lateral to it. Not completely lateral but like center lateral +

yesa It's cancer so the thyroid won't be uniformly enlarged; part of it will stick out and be palpable. https://www.google.com/search?q=medullary+carcinoma&tbm=isch&ved=2ahUKEwja9fz88ZPrAhWOIN8KHeGjAD0Q2-cCegQIABAA&oq=medullary+carcinoma&gs_lcp=CgNpbWcQAzICCAAyAggAMgIIADICCAAyAggAMgIIADICCAAyAggAMgIIADICCAA6BAgjECc6BAgAEEM6BQgAELEDOggIABCxAxCDAVCmkT5Yi6E-YJKiPmgAcAB4AYABlwGIAbYJkgEEMTguMZgBAKABAaoBC2d3cy13aXotaW1nwAEB&sclient=img&ei=KfIyX5q9NI7B_Abhx4LoAw&bih=1045&biw=886&hl=en#imgrc=c3__EaYUNxocYM +

+0
submitted by ∗madamestep(11),

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eemebrmR tath dmyrleaul nmicocaar fo eth ortiydh si dlmyealur. oS sit' wteeneb eht oiellfslc. h'Wsat bneetew het icsllfloe ni hte yi?odhtr C sllec that ceseter otnicnlc.ia