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Ann Pediatr Endocrinol Metab > Volume 2(2); 1997 > Article
Two Cases of Pituitary Hyperplasia Secondary to Primary Hypothyroidism Mimicking Pituitary Tumor.
Duk Hi Kim, So Chung Chung, Ho Seung Kim
Abstract
Pituitary adenoma should be differentiated diagnostically from pituitary hyperplasia, which can be classified by primary, secondary & tertially caused by ectopic tumors. Two cases with marked pituitary enlargement secondary to primary hypothyroidism were reported. The volume of the sellar turcica correlates with circulating TSH level. The subsequent regression with thryoxine therapy indicated hyperplasia rather than adenoma. This observation emphasizes the importance of diagnosing and treating primary hypothyroidism prior to considering surgery for possible pituitary adenoma. A brief review of related literatures was also made.
Keywords: Pituitary hyperplasia;Differential diagnosis of Pituitary adenoma;Primary hypothyroidism


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