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 Indian J Med Microbiol  
 

1a: Coronal Thin slice T1WI of the pituitary before Contrast shows a 5-mm hypointense nodule in the right half of the anterior pituitary b) Post Contrast Coronal Dynamic T1WI through the same area in the pituitary, demonstrates poor enhancement of the right sided adenoma, and another 3-mm nodule to the left of center. c) Post Contrast Late Phase Coronal T1WI through the same area shows persistent hypointensity in the region of the right nodule, but the left-sided nodularity is not evident. Petrosal sinus sampling in this case suggested a left pituitary source for ACTH secretion, which was confirmed by surgery. The right-sided lesion was an incidentaloma.

1a: Coronal Thin slice T1WI of the pituitary before Contrast shows a 5-mm hypointense nodule in the right half of the anterior pituitary
b) Post Contrast Coronal Dynamic T1WI through the same area in the pituitary, demonstrates poor enhancement of the right sided adenoma, and another 3-mm nodule to the left of center.
c) Post Contrast Late Phase Coronal T1WI through the same area shows persistent hypointensity in the region of the right nodule, but the left-sided nodularity is not evident. Petrosal sinus sampling in this case suggested a left pituitary source for ACTH secretion, which was confirmed by surgery. The right-sided lesion was an incidentaloma.