Korean Journal of Nephrology 2010;29(5):606-610.
Ectopic ACTH Syndrome and Severe Hypokalemia Associated with Suspicious Pancreatic Malignancy: A Case Report
Jin Ho Hwang, M.D., Seung Seok Han, M.D., Eun Jin Cho, M.D., Dong Ki Kim, M.D., Ph.D., Kook Hwan Oh, M.D., Ph.D., Kwon Wook Joo, M.D., Ph.D., Yon Su Kim, M.D., Ph.D., Jin Suk Han, M.D., Ph.D., Suhnggwon Kim, M.D., Ph.D. and Curie Ahn, M.D., Ph.D.
Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
증례 : Ectopic ACTH Syndrome and Severe Hypokalemia Associated with Suspicious Pancreatic Malignancy: A Case Report
Jin Ho Hwang, M.D., Seung Seok Han, M.D., Eun Jin Cho, M.D., Dong Ki Kim, M.D., Ph.D., Kook Hwan Oh, M.D., Ph.D., Kwon Wook Joo, M.D., Ph.D., Yon Su Kim, M.D., Ph.D., Jin Suk Han, M.D., Ph.D., Suhnggwon Kim, M.D., Ph.D. and Curie Ahn, M.D., Ph.D.
Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
Abstract
A 72-year-old woman had a 1-month history of general weakness. Previously, after rectal cancer was treated with a low anterior resection, 12 cycles of adjuvant chemotherapy with 5-fluorouracil plus leucovorin was undergone. Follow-up examination showed no evidence of recurrence. However, she suffered from general weakness attributable to hypokalemia, which was refractory to potassium replacement therapy. After further work-up of the hypokalemia, Cushing’s syndrome and ectopic adrenocorticotropic hormone (ACTH) syndrome were diagnosed from the laboratory findings that included a markedly elevated level of 24-hour urine-free cortisol. Several imaging studies revealed masses of the pancreas and other organs, which was more likely to be pancreatic cancer. This case is interesting in that cancerous lesions were identified during work-up of hypokalemia.
Key Words: Hypokalemia, Ectopic ACTH syndrome, Pancreatic neoplasms
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