A 41-year-old man comes to the physician for a 3-month history of fatigue, generalized weakness, and bilateral hand pain. Physical examination shows hyperpigmentation of the skin of the forearms and hepatomegaly. X-ray of the hands shows chondrocalcinosis. Laboratory studies show fasting serum glucose of 112 mg/dL. Which of the following is the most likely explanation for this patient’s findings?
Adrenal cortical hypersecretion
Adrenal cortical hyposecretion
β-islet cell glutamic acid decarboxylase-65 antibodies
Excess cation absorption
Multiple endocrine neoplasia
