Question: What is the difference between panhypopituitarism vs. hypopituitarism? Answer: The terms are often used interchangeably. Strictly speaking, panhypopituitarism refers to loss of all pituitary function, both anterior and posterior pituitary function. However, some use this term to refer to loss of anterior pituitary function without diabetes insipidus (function of the posterior pituitary gland). Panhypopituitarism… Continue Reading