A 54-year-old man receiving induction chemotherapy for acute leukemia presents with sudden left flank pain and gross hematuria. Vital signs: BP 138/82, HR 92, RR 18, Temp 37.2°C, SpO2 98%. Urine pH is 5.0 with specific gravity 1.030. Urinalysis microscopy reveals rhomboid crystals and uric acid crystals. Serum uric acid is elevated at 8.2 mg/dL. No fever or dysuria noted. Which of the following is the most likely stone composition?
- A)Struvite
- B)Uric acidGABARITO
- C)Cystine
- D)Calcium oxalate
- E)Calcium phosphate
Explicação
Rapid cell breakdown during tumor lysis syndrome increases purine catabolism and uric acid production. Uric acid stones form in acidic urine and are classically rhomboid or rosette shaped and radiolucent. Ver explicação completa e trilha adaptativa →