Case Presentation: A 31-year-old man with chronic kidney disease following failed renal transplant on hemodialysis (HD) for 3 years via arteriovenous fistula and tertiary hyperparathyroidism presented for admission following a 3.5-gland parathyroidectomy. Intraoperative PTH levels dropped from 2280 to 503 pg/mL. Postoperatively, he presented with hypocalcemia (total calcium 5.9 mg/dL; corrected calcium 6.3 mg/dL) and [...]

Case Presentation: The patient is a 63-year-old female who presented with 3 days of new-onset facial flushing, dysphagia, and diffuse left upper extremity and perioral paresthesias. She underwent a total thyroidectomy 4 days before admission for multinodular goiter with an NRAS mutation positive nodule, which carries a 75% risk of malignancy and a RYGB >10 [...]

Case Presentation: A female in her 50s with no significant past medical history presented to the emergency department with a 1-2 week history of lower extremity swelling, shortness of breath, and unintentional weight loss of 40 lbs over three years. Upon examination, her vital signs revealed a heart rate of 190 bpm and blood pressure [...]

Case Presentation: A previously healthy 59-year-old male with newly-diagnosed hypertension and prediabetes presented to the emergency department following an unwitnessed syncopal episode on standing. He was found to have significant electrolyte abnormalities with critical values of potassium at 2.5, magnesium at 1.4, calcium at 6.3, phosphorus at 1.8, and a nonanion gap metabolic acidosis with [...]