@cmahlen Give us some more context for this Q so we know why it’s needed; are there any other distinguishing features like Horner syndrome/shoulder pain? Does it directly ask which is more common? etc.
The explanation for why superior sulcus tumor is incorrect says that it is a less common cause of SVC syndrome because they’re located more peripherally. There are no other distinguishing features in the question stem that the explanation mentions.
Added #deck-AnKing Overhaul for Step 1 & 2-AnKingMed and removed #deck-anking-overhaul-for-step-1–2-ankingmed
Added #deck-AnKing Overhaul for Step 1 & 2-AnKingMed and removed #deck-anking-overhaul-for-step-1–2-ankingmed
Appreciate it! Sorry if you’re getting slammed w/ notifications, fixed up some html 
No worries, I actually appreciate the notifications! It’s nice to know when someone responds instead of having to go back to manually check