Case Presentation: This is a 4-year-old previously healthy girl, fully immunized with the exception of COVID-19 immunizations, who was hospitalized after presenting with fevers and fatigue for one week followed by gross hematuria. At the outset of her fevers, she tested negative for COVID-19 using a home antigen test. 4 days prior to admission, she [...]

Case Presentation: The patient is a 43-year-old female with asthma, hypertension, and obesity who presented to her PCP for cough, pharyngitis, and dyspnea. Exam revealed jaundice, livedo reticularis, and pallor. Complete blood counts (CBC) showed white blood cells 22.8 x109/ L, hemoglobin 8.9 g/dL, and platelets 674 ×109/L. Her family history had no hematologic malignancies [...]

Case Presentation: A 63-year-old man with a history of heart failure and cold autoimmune hemolytic anemia secondary to Waldenstrom macroglobulinemia was admitted for shortness of breath. He was diagnosed with heart failure exacerbation and was being treated with intravenous diuresis with close electrolyte monitoring. His initial potassium reading was 6.2 mEq/L, but the sample was [...]

Case Presentation: This is a case of a 65-year-old man with a history of prostate cancer who presented with a 3-day history of fatigue and shortness of breath. Initial diagnostic work-up revealed a hemoglobin of 7.8 g/dL (10.1 g/dL the day prior), normal platelets, and an indirect hyperbilirubinemia. Lactate dehydrogenase was elevated, haptoglobin was undetectable [...]