Thyroid hormone resistance (RTH) is a rare autosomal dominant disorder, characterized clinically by goiter and biochemically by elevated circulating free thyroid hormone levels in the presence of measurable serum thyroid-stimulating hormone (TSH) concentrations. About 85% of patients with RTH harbor mutations in thyroid hormone receptor [beta] (TR[beta]). Even rarer is pituitary thyroid resistance syndrome. We report a case of a 35-year-old man who presented with hypermetabolic symptoms with elevated levels of thyroid hormones, associated with nonsuppressed thyrotropin (TSH). When treated with anti-thyroid drugs, his thyroid hormone levels normalized and TSH increased, suggesting thyroid resistance at the pituitary level.
Isolated intrasellar pituitary mucocele following transsphenoidal sinus surgery is extremely rare. The clinical features resemble a pituitary tumor, therefore careful radiological interpretation is crucial to reach the correct diagnosis. We report a case of intrasellar mucocele who had transsphenoidal sinus surgery performed 15 years prior.