A 45 year old man comes to the emergency department with sudden severe right flank pain radiating to the groin. He has a history of Crohn disease and multiple small bowel resections. Urinalysis shows microscopic hematuria. A passed stone is found to be envelope shaped on microscopy. Which of the following is the most likely type of stone?
- A)Xanthine stone
- B)Calcium oxalate stoneGABARITO
- C)Uric acid stone
- D)Struvite stone
- E)Cystine stone
Explicação
Calcium oxalate stone is correct. Fat malabsorption from Crohn disease increases oxalate absorption in the colon, predisposing to calcium oxalate nephrolithiasis. Envelope shaped crystals and radiopaque stones are classic clues. Ver explicação completa e trilha adaptativa →