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SPECT and MRI revealed that the pituitary mass recurred with multiple bone metastasis and intracranial metastasis after surgery. (A) SPECT performed 1 month after surgery reveals the tumor metastasis in the skull, skull base, 3rd thoracic vertebra, and the right sacroiliac joint. MRI performed 3 months after surgery reveals the pituitary mass (B) and left frontoparietal mass (C) that recurred. MRI = magnetic resonance imaging, SPECT = single-photon emission computed tomography.
