Inferior petrosal sinus sampling


On the basis of the IPSS and MRI this patient went on to have an exploratory transphenoidal hypophysectomy. Although histological proof of a microadenoma was not achieved, the patient became biochemically normal following surgery and their ACTH levels returned to normal. 

At 18 months follow up remains well with normal pituitary function. 

Case courtesy of A/Prof Peter Mitchell, Royal Melbourne Hospital