Background: Tumor lysis syndrome (TLS) is a major life-threatening oncological emergency where accelerated damage of rapidly proliferating tumor cells results in critical metabolic derangements including hyperuricemia, hyperkalemia, hyperphosphatemia, and hypocalcemia potentially leading to acute kidney injury (AKI) and multi-organ failure. TLS has been well documented in hematologic malignancies but is extremely rare in solid neoplasms, [...]

Case Presentation: A 61-year-old male presented with complaint of left arm swelling with left axillary lump, which had been worsening for two months. He reported of having a dark-colored left forearm skin lesion which he reportedly removed by himself 15 years ago without seeking medical care. Computed Tomography of chest revealed too numerous to count [...]

Case Presentation: Hyperkalemia is common in patients with hematological malignancies due to tumor lysis syndrome (TLS). Hyperkalemia can be further complicated by presence of pseudo-hyperkalemia in these patients. Accurate potassium measurement is critical as over-correction in the setting of hyperkalemia can lead to iatrogenic hypokalemia. A 38-year-old male presented to the Emergency Department for fatigue, [...]