and we’re back! with BRAND SPANKIN' NEW tangents!
to snoo-finity ... and beyond!
NBME 24 Answers
A 7-year-old boy has metabolic acidosis and ...
Area labeled ‘B’ (Proximal convoluted tubule)
It looks like it was a type II RTA. The difference is incredibly subtle from the info given in this question.
He has Fanconi syndrome which is generalized reabsorption defect in PCT which leads to metabolic acidosis and hypophosphatemia → can lead to rickets
Also, does lead to type II RTA
Also the proximal tubule is the place with the highest phosphate absorption rate. That's why PTH works here mostly and a little bit in the distal tubule.