CASE 130 History: A 17-year-old boy presents with left leg pain 6 weeks after lumbar diskectomy at L5-S1. 1. What should be included in the differential diagnosis? (Choose all that apply.) b. Postoperative diskal pseudocyst e. Ganglion cyst of the posterior longitudinal ligament 2. Which of the following features is not helpful in distinguishing postoperative diskal pseudocyst from other epidural cysts such as diskal cyst? d. Paracentral ventral epidural location 3. Which technique is preferred for imaging postoperative diskal pseudocyst? b. Ultrasound d. MRI 4. Which of the following statements regarding postoperative diskal pseudocyst is true?
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