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NBME 21 Answers

nbme21/Block 2/Question#24

A 65-year-old man dies in a motor vehicle ...

Squamous cell carcinoma

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 +6  upvote downvote
submitted by tinydoc(55),

infarcts would be a more peripheral wedge shape

abcess wouldnt be invasive to the surrounding area i think.

squamous cell is more centrally located

wasn't 100% sure but thats the best answer slthough stupid to give 0 symptoms and just a picture, nothing like an actual clinical scenario

tsl19  Squamous cell is centrally located and has cavitation, which you can see in the pic. Similar to this one: https://webpath.med.utah.edu/LUNGHTML/LUNG068.html +2  




 +3  upvote downvote
submitted by hungrybox(240),

Macroscopically, squamous cell carcinoma tends to be off-white in color, arising from, and extending into a bronchus.

Source: Radiopedia

privatejoker  Lol am I the only one that picked Malignant Lymphoma? I thought I remembered Sattar mentioning that metastases are the most common form of cancer to be found in the lung? I tend to pick the "most common" presentation when given so little information to work with +  




 +0  upvote downvote
submitted by mattfoley_govtcheese(2),

My choice for Squamous Cell Carcinoma was guided by the central location of the tumor. To me, that didn’t look like the cavity you’d get with abscess but a huge tumor.





 +0  upvote downvote
submitted by lnsetick(36),

I don’t think it was cavitary; I think that was just the bronchus. I think abscesses tend to be smaller, and wouldn’t affect the surrounding parenchyma much. I wasn’t super confident in picking squamous cell carcinoma, but I did know that squamous cell carcinoma tends to be a centrally-located lung tumor.

fallabella4  Squamous cell carcinoma of the esophagus presents itself as an raised plaque with ulcerations +