Case Presentation: A 68-year-old female with non-Hodgkin’s lymphoma treated with R-ICE (rituximab, ifosfamide, carboplatin, etoposide) and recent autologous stem cell transplantation, who presented with poor oral intake due to mucositis and diarrhea. Initial labs revealed sodium (Na) 146 mmol/L, potassium (K) 2.4 mmol/L, phosphorus (Pi) 2.3, and creatinine (Cr) 1.40 mg/dL comparing to baseline 1.2 [...]