PT - JOURNAL ARTICLE AU - Yun, Seongseok AU - Walker, Courtney N AU - Vincelette, Nicole D AU - Anwer, Faiz TI - Acute renal failure and type B lactic acidosis as first manifestation of extranodal T-cell lymphoblastic lymphoma AID - 10.1136/bcr-2014-205044 DP - 2014 Jun 07 TA - BMJ Case Reports PG - bcr2014205044 VI - 2014 4099 - http://casereports.bmj.com/content/2014/bcr-2014-205044.short 4100 - http://casereports.bmj.com/content/2014/bcr-2014-205044.full AB - We describe a rare case of a 19-year-old male patient with a history of epilepsy and developmental delay who presented with acute renal failure (ARF) and lactic acidosis (LA) as the first manifestation of T-cell lymphoblastic lymphoma. Renal ultrasound and CT of the abdomen showed renal parenchymal infiltration, and renal biopsy demonstrated T-cell lymphoblastic lymphoma. LA, ARF and electrolyte abnormalities were refractory to the initial treatment of bicarbonate infusion and hydration. However, these abnormalities rapidly normalised after the initiation of chemotherapy, suggesting that the LA and ARF were secondary to lymphomatous renal infiltration.