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submitted by imgdoc(72),

You can cross out the top three answer choices, A,B,C. You wont be reabsorbing anything in the PCT in fanconi's syndrome. Looking at hypokalemia, hyponatremia, and hypophosphatemia now. Hypokalemia can't be correct because even though potassium is lost it will be reabsorbed at the later thick ascending loop and if that doesnt make sense, the body will adjust for low serum potassium but activating the H+/K+ pump on cells. It isn't hyponatremia because at the collecting duct principal cells, reabsorption will occur. This leaves hypophosphatemia as the correct and only answer choice.

imgdoc  by* +1  
larascon  Excellent explanation, thank you ! +  

submitted by xxabi(145),

Bronchogenic carcinoma = lung cancer

That being said, lung adenocarcinoma specifically is associated with hypertrophic osteoarthropathy, which is a paraneoplastic syndrome characterized by ´╗┐digital clubbing, arthralgia, joint effusions, and periostosis of tubular bones

luke.10  why not systemic scleroderma since i did this question wrong and i chose systemic sclerosis scleroderma , can someone explain that ? +1  
kernicterusthefrog  My best guess answer to that @luke.10 is that: a) there's no mention of any skin involvement (which there would be in order to be scleroderma) b) Scleroderma shows pitting in the nails, not clubbing c) There would be collagen deposition with fibrosis, not hypertrophy of the bone at joints Saying that, I also got this wrong! (but put RA...) so I'm not claiming to "get this" Hope my thought process helps, though! +3  
yotsubato  This is in FA 2019 page 229 +3  
larascon  I agree with @kernicterusthefrog on this one, Bronchogenic carcinoma = lung cancer. Squamous cell carcinoma gives you hypercalcemia (new bone formation; maybe?), commonly found in SMOKERS ... +3