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Contributor score: 7

Comments ...

 +0  (nbme24#7)

how did you know it was a strawberry hemangioma and not a port wine stain?I thought I had this one in the bank

kateinwonderland  Me too! TABLE 1 Classification of Vascular Lesions Vascular malformations (flat lesions) -Salmon patch (also known as nevus simplex or nevus telangiectaticus) -Port-wine stain (also known as nevus flammeus) Hemangiomas (raised lesions) -Superficial hemangioma (also known as capillary nevus hemangioma) -Deep hemangioma (also known as cavernous hemangioma)

 +0  (nbme24#31)

can someone explain why this is not transduction? Last nbme I said conjugation and got it wrong for transduction.. this one I say transduction and its conjugation.

pseudorosette  I would say because this happened between two bacteria, but in transduction what causes the acquisition of bacterial resistance is coming from a bacteriophage, which is a virus that infects bacteria, but that is never hinted at the question!
medpsychosis  Quick Overview of the involved topics and answer choices that are relevant in this question: Transduction: Involves phage, cleaves DNA and takes a part with it as it is packaged. Generalized is when is happens by accident. Specialized is an excision event. Transformation: bacteria takes up naked DNA around it and incorporates it therefore becoming "transformed" e.g. (SHiN) S. Pneuma, H. Influenza type B, and Neisseria. Transposition: Jumping from one location to another within same bacterial organism (e.g. from chromosome to plasmid) Conjugation: Above mentioned plasmid gets transferred from conjugal bridge from one bacteria to another.
wowo  FA2019 p130
zbird  Easy here...first both are G-ves which likely have a sex pilus and if cultured together as in this case transfer their plasmid. Transduction need phage. Transposition is exchange of genetic material inside the bacteria b/n the dna and the plasmid or vv (FA2019)

Subcomments ...

submitted by m-ice(117),

This girl has Mono caused by Epstein-Barr Virus. The symptoms are relatively vague, but lymphadenopathy like this would be common for Mono. The CBC shows elevated lymphocytes, implying this is not a bacterial illness, so viral is likely. Combined with the lymphadenopathy, this makes us worry about Mono. The Mono-Spot test for EBV is what the question is referring to when describing the sheep erythrocytes agglutinating. From there, this question requires that you know that in EBV infection, EBV infects B cells, but does not cause them to become abnormal. Instead, CD8 cells, which are actively trying to kill the B cells, become abnormal.

medskool123  NBME does trick now and then.. when they zig you zag. then when you think they are going to zag, they zig just to destroy yourself confidence. +5  
kylemax  The abnormal T-cells are known as Downey type II cells (Sketchy) +2  
haliburton  I was recognized EBV, then knew EBV infects Bc, and the atypical lymphocytes are Tc. Then I said CD8 are MHC1 for virii, and bingo bango, boom. +  
trichotillomaniac  congrats you played yourself +2  

submitted by lsmarshall(188),

I thought this was a trick question since skin cancers are the most common type of cancers overall. But actually among HIV patients, HIV-related cancers are much more common than non-HIV-related cancers (even skin cancers). EBV-induced primary CNS lymphoma is the only option that is AIDs-defining illness/cancer.

medskool123  why not hep B? i guess another whats the better answer ones... Just rem reading that it was more common with aids pts.. anyone have an idea about this? +1  
haliburton  Yes, I think CNS lymphoma as an AIDS defining illness wins the day. My thought was since SHE has AIDS it is most likely from IVDA, which has a high risk of HBV that could go undiagnosed for a long time. at 32, that might not be long enough to have HBV and get HCC (but with no immune system...?) +1  
yotsubato  God damn this is such BULLSHIT... +5  
trichotillomaniac  Why you gotta do me dirty like this NBME +  

submitted by neonem(243),

This patient has an unstable mood and a crazy relationship. She's also splitting (a defense mechanism wherein one acts like people are all-good or all-bad) as she talks about the physician and her coworkers. This characteristic is most commonly associated with borderline personality disorder. This one is in Group B ("Wild"), along with antisocial, histrionic, and narcissistic.

medskool123  i get why its borderline now (I guess I kind of always thought suicide was the biggest part of that) but can someone tell me why its not paranoid? Is it just a matter of the "better" choice? The "youre the only one i can trust" thing lead me to that. +  
drmomo  same here +  

submitted by mousie(77),

A Teen with injection of both conjunctiva = weed could also be abusing other drugs Is 12 years old and four months just too old and too long of a time for it to be impetigo? I narrowed it down to these two and guessed but... I wasn't sure I could eliminate it.

medskool123  I picked impetigo because of the gold stippling... I guess I took that as honey crusted lesions. F*ck NBME. +1  
yotsubato  Huffing gold spray paint. A la the chrome huffers in Mad Max +3  
subclaviansteele  LOL I think that might be what they were going for here. Gold spray paint. +1  
et-tu-bromocriptine  Anyone know what may be causing his weight loss and unwillingness to eat? I thought too much into it and put "mercury poisoning", since I thought the heavy metal's abdominal symptoms may have caused him to not want to eat. ¯_(ツ)_/¯ +