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Brain CT scan. A: A CT image at the time of initial head trauma showed neither skull fracture nor brain contusion. B: An image 1 month after the initial head trauma showed isodense crescent-shaped hematoma on the surface of the left brain cortex, accompanied by slight midline shift to the opposite side.
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One month later, when he visited the hospital for a follow-up CT scan, he experienced a slight difficulty in walking and a chronic subdural hematoma was found in the left hemisphere (Fig. 1).
Pituitary MRI. A: T1WI image showed pituitary gland normal in size and shape, normally with a high intensity of the posterior lobe. B: Gadorinium enhancement image revealed homo- genously enhanced pituitary gland.
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No stalk thickening or empty-sella was detected (Fig. 2).