CASE PRESENTATION: 66 year old non-diabetic male, history of malignant SFTP presented to the emergency room with symptomatic hypoglycemia and a blood sugar of 24. His symptoms resolved with dextrose ampules, however he remained severely hypoglycemic while receiving continuous dextrose infusions. He was diagnosed with SFTP in 2004 for which he underwent three pleurectomies and adjuvant external beam radiation due to recurrence. After progressive disease, he was treated with bevacizumab/temozolamide, followed by pazaponib. His most recent CT scan revealed three large pleural based masses measuring up to 10 cm with retroperitoneal extention. Physical exam was remarkable for decreased breath sounds throughout left lung field. Lab testing revealed a low C-peptide and insulin concentration excluding insulinoma, ectopic insulin production or exogenous insulin administration. Serum cortisol, adrenocorticotrophic hormone, and growth hormone levels were also normal, and no insulin antibody was detected (Table 1). Therefore the diagnosis of Doege Potter Syndrome was made. Due to the extent of his disease, he was not a surgical candidate. His sugars remained stable with frequent meals, and snacks throughout the night. Decadron was initiated and his pazaponib was continued. His Family was educated on signs and symptoms of hypoglycemia and emergency glucagon usage.