@Ahmed7 @shmuelsash @herstein.jacob @Stillmatic C8 does exist but this seems to have been changed in First Aid recently. Confirmed in FA23 pg 509; can’t find any context in AMBOSS about the most common levels
C8-T1 is written on Pathoma. I believe this is not high yield. Just knowing clinical features and association Arnold Chiari type 1 is enough.
I don’t feel strongly. I would follow FA or check more recent Pathoma if possible (I have old version)