Unusual presentation of a pituitary abscess

We present a case of a pituitary abscess without an identifiable source. The patient presented with progressive visual field defects, unilateral visual loss, and proptosis. However, no symptoms or signs of local or systemic infectious process were present. Computerized tomography and magnetic resonance imaging studies suggested but did not confirm the diagnosis. Emergent transsphenoidal drainage resulted in a complete recovery.