q_____________? - sarim

[ArchivalUser]

A 18 y/o man come to the ER and complains of left intensive left flank pain that radiates to the groin.He refers to his symptoms as "stone passage", which he has experienced "for so many times since childhood".His uncle has the same problem.Urinalysis shows hexagonal crystals.The urinary cyanide nitroprusside test is positive.Which of the following is the most likely cause of this pt's condition ?

A-Parathyroid adenoma
B-Excessive intestinal reabsorption of oxalate
C-Amino acid transport abnormality
D-Abnormality in uric acid metabolism
E-Infection

[ArchivalUser]

C. Homocystinuria

[ArchivalUser]

B...?

[ArchivalUser]

C..inborn errors of amino acid transporters

[ArchivalUser]

CC

[ArchivalUser]

BB

[ArchivalUser]

cc.....COLA transport defect?

[ArchivalUser]

cysteinuria.....defect of renal tubular amino acid transporter...cystein crystals in urine...hexagonal in shape...ans id ccc..rt?

[ArchivalUser]

looked it up: C

[ArchivalUser]

"C" is correct

Cystinuria