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A 3-year-old boy is found to have spontaneous bursts of non-rhythmic conjugate eye movements in various directions. He also suffers from hypotonia and myoclonus. Fuher physical examination reveals an abdominal mass and following clinical finding. CT scan revealed the following finding. Which of the following is false regarding the patient's condition?
The most common site of tumor is adrenal medulla.
90% of tumours are associated with elevated production of catecholamines.
Rearrangement or deletion of sho arm of chromosome 1 is seen in 80% cases.
Immunohistochemical detection of chromogranin is useful for diagnosis.
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