A Rare Case of Addison's Disease Presenting With Intermittent Pancytopenia and Cardiac Tamponade

To report the first case, to our knowledge, of intermittent pancytopenia and cardiac tamponade occurring together in association with Autoimmune Addison's Disease (AAD).

A 21 year-old woman presented on three different occasions with multiple complaints. Her evaluation was significant for intermittent pancytopenia (white blood cell, 1.3-3.0 × 10³/μL [normal 4.5-11 × 10³]; hemoglobin, 8.8-9.6 g/dL [11-16]; and platelets, 102-117 × 10³/μL [150-400 × 10³/μL]) and pericardial effusion with cardiac tamponade. Further investigation including a morning serum cortisol level of 0.6 μg/dL (5.27-22.45 μg/dL), adrenocorticotropic hormone level of 1027 pg/mL (normal 6-50 pg/mL), and positive 21-hydroxylase antibodies confirmed the diagnosis of primary adrenal insufficiency due to AAD. Treatment with steroids resulted in prompt hemodynamic recovery with normalization of all blood cell lines.

The diagnosis of AAD is often delayed or overlooked. Pancytopenia occurring in AAD is most likely due to either marrow suppression in the setting of acute illness and exacerbated by hypoadrenalism or possibly an autoimmune-mediated marrow reaction. Pericarditis with cardiac tamponade has been described in AAD occurring in the setting of polyglandular autoimmune syndrome type II. The pathogenesis involves autoimmune inflammation of the pericardium, which precipitates an acute inflammatory reaction and rapid fluid accumulation.

Pericarditis with cardiac tamponade and intermittent neutropenia may be rare manifestations of an Addisonian crisis.