Conclusion:Pituitary abscess should be considered when patients presented diabetes insipidus,hypopituitarism,sella bone erosion and sella neoplasm similar to a cyst tumor in CT or MRI.

若区病变不大，但引起较严重的蝶骨质破坏，现为尿崩症和功能低下时，应首先考虑肿。