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  • Title: Empty sella in control subjects and patients with hypopituitarism.
    Author: Ishikawa S, Furuse M, Saito T, Okada K, Kuzuya T.
    Journal: Endocrinol Jpn; 1988 Oct; 35(5):665-74. PubMed ID: 3220045.
    Abstract:
    The frequency and distribution of various degrees of empty sellae have been examined in subjects without any pituitary disorder and in patients with hypopituitarism. Among them none had sellar enlargement. Sellar computed tomography (CT) with contiguous 2 mm slices (thickness in the axial projection) was performed in 56 control subjects. The CT findings on sella turcica were graded into 4 groups (0, 1+, 2+, and 3+), and grades 2+ and 3+ indicated moderate and marked empty sellae. Thirty-nine percent of the control subjects had empty sellae of grade 2+ or 3+. Sellar CT scans with contiguous 2 mm slices were also performed in 11 patients with hypopituitarism. The sellar volume ranged from 224 to 715 mm3. CT scan was carried out more than 2 years after the onset of hypopituitarism in 10 of 11 patients, and showed typical empty sellae of grade 3+ in all 10 patients. There was no empty sella in a patient with hypopituitarism whose CT scan was carried out 3 months after the massive postpartum hemorrhage. Our results indicate that moderate empty sella of grade 2+ can be seen in subjects without any pituitary disorder, and that a typical empty sella of grade 3+ is present in hypopituitarism with a normal sized sella turcica. An empty sella associated with hypopituitarism may be due to shrinkage of the pituitary gland related to its hypofunction.
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