Pituitary mass induced by pharmacological interaction
Loubna Agerd1, Youssef Khabbal, Saïd Boujraf
1Department of Endocrinology, University Hospital of Fez, Fez, Morocco.
Neurosciences (Riyadh, Saudi Arabia)
|January 15, 2014
Summary
Drug interactions can cause rare pituitary masses due to hypothyroidism. Adjusting medication timing, like separating L-thyroxine and calcium, can resolve these masses, avoiding surgery.
Area of Science:
- Endocrinology
- Pharmacology
- Oncology
Background:
- Pituitary masses secondary to peripheral hypothyroidism due to drug interactions are rare and often overlooked.
- Failure to recognize this association may lead to unnecessary invasive surgical interventions.
Observation:
- A 41-year-old woman presented with a pituitary mass caused by hypothyroidism.
- The hypothyroidism stemmed from L-thyroxine malabsorption due to interaction with calcium supplementation.
- This highlights a critical, yet uncommon, drug interaction affecting thyroid hormone levels.
Findings:
- The patient's L-thyroxine and calcium dosages were reduced.
- A new regimen was implemented, separating L-thyroxine and calcium administration by 3 hours.
- This intervention led to significant clinical, biological, and imaging improvements.
Implications:
- This case underscores the importance of pharmacovigilance in identifying drug-induced hypothyroidism.
- Medical management, specifically adjusting drug administration timing, can effectively treat pituitary masses in such cases.
- Early recognition and appropriate medical intervention can prevent the need for invasive surgery.
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