Read the following information.
Free OET Writing Sample Test with Answer Subtest Radiography #8
Task: CT Abdomen (Renal Colic)
Case Notes:
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Patient: Mrs. Sarah Mitchell, 39 yrs, office worker 
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Referral source: Emergency Department 
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Presenting issues: Sudden onset severe left flank pain radiating to groin, nausea, vomiting ×1, difficulty passing urine 
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Onset/duration: Started 12 hours ago, worsening overnight 
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Exam findings: Left costovertebral angle tenderness, no fever, mild tachycardia, BP stable 
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Investigations: Urinalysis – microscopic haematuria; blood tests – creatinine slightly raised 
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Medical history: Hypertension (on amlodipine), no previous renal stones 
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Social history: Non-smoker, moderate caffeine intake, low fluid consumption 
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Request: Non-contrast CT KUB to confirm renal calculi and assess obstruction 
