It has been reported in autopsy that most of the patients with korean hemorrhagic fever had necrotic areas inthe anterior lobe of the pituitary gland. The high resolution CT of sella was performed to demonstrate thepossible pituitary necrosis in consecutive 13 patients with korean hemorrhagic fever. Only 3 patients demonstratenormal sellar findings. Ten (77%) out of 13 cases reveal abnormal findings; 2 patients show typical empty sellarand the rest (8 patients) reveal localized low denstiy area in the anterior portion of the sella turcica, whichmay be from partial empty sella, pituitary infarction or other unknown pathology. The low denisties within thesella will be discussed.