Hemorrhagic infarction

• Sepsis

• Adrenal vein thrombosis

• Anticoagulation

• Coagulopathy

• Thrombocytopenia

• Hypercoagulable state

• Trauma

• Postoperative

• Severe stress

Cancer metastasis/lymphoma

Autoimmune

• Addison disease

• Polyglandular autoimmune syndromes I and II

Infectious process

• Disseminated fungal infections (histoplasmosis)

• Tuberculosis

• HIV (CMV, MAC, cryptococcus)

Infiltrative process

Iatrogenic

• Ketoconazole

• Etomidate

• Metyrapone

• Suramin

Iatrogenic

• Glucocorticoids

• Megestrol acetate (glucocorticoid activity)

Tumor or other mass lesion

• Pituitary adenoma

• Metastasis

• Lymphoma

• Primary tumor of brain or meninges

• Rathke cleft cyst

• Empty sella

Pituitary apoplexy

• Sheehan syndrome (postpartum hemorrhage)

Infiltrative process

• Hemochromatosis

• Histiocytosis

• Tuberculosis