Acute Renal Failure: A Rare Initial Presentation of Acute Lymphoblastic Leukemia

Acute lymphoblastic leukemia has several presentations associated with bone marrow and extramedullary involvement. the unusual presentation may be due to the infiltration of leukemic cells in any organ. an 11-year-old girl presented with fever and vomiting, since one day before admission after starfish biting during swimming. her vital signs were: blood pressure 150/100 mmhg, pulse 98 beats per minute, respiration 18 breathes per minute, and temperature 37.2 °c (99 f). laboratory work-up showed blood urea nitrogen 38 mg/dl and creatinine 2.8 mg/dl. in peripheral blood smear, few atypical cells, mild anemia (hb: 9.2 g/dl), and mild thrombocytopenia (platelet: 109,000/μl) were detected. bone marrow aspiration and immunophenotyping were in favor of acute precursor b cell type lymphoblastic leukemia. the patient had a favorable response to treatment after initiating high-risk chemotherapy. therefore, acute renal failure can be a rare initial presentation of acute lymphoblastic leukemia, and azotemia will improve with an early chemotherapy treatment.