A Rare Case of Primary Hyperparathyroidism and Hypercalcemia of Malignancy Seen in a Patient With Prostate Adenocarcinoma.

Hypercalcemia of malignancy is commonly associated with several malignancies, but its existence in prostate cancer is an uncommon finding. The concurrent existence of a parathyroid adenoma and a history of hypercalcemia over several decades further adds to the enigma. Our case is of an 82-year-old man with a history of prostate cancer who presented to the endocrinology clinic with hypercalcemia.

Rare Challenges in Diagnosing Cushing's Syndrome and Primary Aldosteronism: A Case Report of a Female With a Negative Workup.

Cushing's syndrome with concurrent primary aldosteronism (PA) is a rare presentation, and establishing an early diagnosis is imperative to preventing morbidity and long-term sequelae. The diagnosis is established by sequential lab work, showing an elevated cortisol and aldosterone level. Taking the above into consideration, it is evident that repeatedly negative results on all three tests can present an extremely challenging case.