CASE 62 History: A 22-year-old woman is incidentally found to have a mediastinal mass on a chest x-ray done for a positive purified protein derivative (PPD) test. 1. What should be included in the differential diagnosis? (Choose all that apply.) b. Schwannoma c. Chordoma d. Lymphoma e. Meningioma 2. In what region are the organs of Zuckerkandl located? a. Mediastinal, at approximately the T5 level b. Retroperitoneal, at approximately the L3 level c. Intraperitoneal, at approximately the L1 level d. Presacral 3. What is the most specific nuclear medicine test for tumors of the sympathetic nervous system? a. Octreoscan b. Positron emission tomography with fluorodeoxyglucose (18F-FDG PET) c. Gallium scan d. Meta-iodobenzylguanidine (MIBG) scan 4. Which of the following features supports the diagnosis of ganglioneuroma when attempting to differentiate ganglioneuroma from more aggressive ganglioneuroblastoma and neuroblastoma? a. Presence of bone metastases
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