CASE 142 History: A 40-year-old woman from Turkey complains of increasing back pain for the past 2 years. 1. What should be included in the differential diagnosis? (Choose all that apply.) a. Chordoma d. Hydatid cyst 2. What part of the spine is most commonly involved? a. Cervical b. Thoracic c. Lumbar d. Sacrum 3. What signal characteristics are associated with cyst viability? a. Hyperintense T1 signal centrally within the cyst b. Hypointense T1 signal of the cyst wall c. Hypointense T2 signal of the cyst wall d. Hypointense T2 signal centrally within the cyst 4. Which of the following statements regarding the histopathology of spinal hydatid disease is true? a. Viable cysts typically show dystrophic calcifications on radiographs. b. The intervertebral disks are typically involved in the early stages of the disease.
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