Atypical Presentation of Panhypopituitarism

Area of Science:

• Endocrinology
• Neurology

Background:

• Hypopituitarism is a rare endocrine disorder involving deficiencies of anterior or posterior pituitary hormones.
• It can manifest as isolated hormone deficiencies or panhypopituitarism, affecting all pituitary hormones.

Observation:

• A 59-year-old man presented with syncope and persistent hypotension despite hydration.
• Initial investigations revealed a sellar mass with calcifications and suprasellar extensions on CT and MRI.
• Differential diagnoses included sepsis, stroke, cardiac arrhythmias, and pulmonary embolism, which were ruled out.

Findings:

• The patient exhibited a deficiency of all anterior pituitary hormones.
• The pituitary macroadenoma was identified as the cause of the mass effect leading to panhypopituitarism.

Implications:

• This case highlights the importance of considering endocrine disorders in patients with unexplained syncope and hypotension.
• Pituitary macroadenomas can present with diverse symptoms, including hormonal deficiencies and neurological effects.