Emergency ambulatory outpatient management of immune-mediated hypophysitis

Purpose: Immune-mediated hypophysitis is an important toxicity related to immune checkpoint inhibitors (ICI). Optimal management is associated with improved outcomes. It represents a wide spectrum of clinical presentations, and a proportion may be suitable for emergency ambulatory management. Methods: Emergency ambulatory management of patients presenting with clinical features and findings consistent with ICI-induced hypophysitis was considered at a tertiary cancer/endocrinology hospital. Suitable patients were initially investigated and treated in accordance with the UK emergency management guidelines for ICI induced hypophysitis. After an initial observation period of 4 h, patients were discharged with oral hydrocortisone (20, 10, 10 mg). Results: An initial cohort of 4 patients with emergency presentations of ICI-induced hypophysitis has been managed in an ambulatory fashion in the first 3 months. There were no 30-day readmissions. Conclusion: Carefully selected emergency presentations with immune-mediated hypophysitis may be suitable for ambulatory management.