[A Case of WDHA Water Diarrhea Hypokalemia Achlorhydria Syndrome that Developed after Multimodal Therapy for Retroperitoneal Paraganglioma].

A 45-year-old woman visited a local clinic with left-flank abdominal pain. Abdominal computed tomography (CT) revealed a tumor 20 cm in diameter in the left adrenal gland. She was referred to our hospital for further treatment.