[Primary pituitary abscess: a case report].

We report a rare case of primary pituitary abscess. A 53-year-old female was admitted to our hospital with headache and visual field defect. CT and MRI demonstrated an intrasellar cystic mass and suprasellar solid mass. Intrasellar cystic mass had peripheral enhancement. Suprasellar solid mass had homogeneous enhancement. Transsphenoidal surgery was performed. A purulent material was aspirated from the intrasellar region. Histological examination of the purulent material revealed an infiltration of inflammatory cells and pituitary cells. There were no tumor components or epithelium. The postoperative course was uneventful. The patient was discharged from our hospital without neurological deficits. Two years after surgery, she still has no neurological deficits and no recurrence of intra- and suprasellar mass on MR image.