Retroperitoneal Doege-Potter syndrome with intraoperative blood glucose monitoring.

Background: Doege-Potter syndrome, characterized by solitary fibrous tumors and non-islet cell tumor hypoglycemia, is rare. Here, we report a case of Doege-Potter syndrome in which retroperitoneal tumor resection was performed with continuous intraoperative blood glucose monitoring.
Case Presentation: A 37-year-old man presented with hypoglycemia-related symptoms, and a 10 × 12 × 9 cm tumor was found in his right kidney. Following tumor resection, insulin secretory abnormalities improved, and intraoperative blood glucose monitoring showed no hypoglycemic events. High levels of insulin-like growth factor-II confirmed the diagnosis of an insulin-like growth factor-II-producing tumor with non-islet cell tumor hypoglycemia. Postoperative serum insulin-like growth factor-II levels normalized, with no recurrence observed over 3 years.
Conclusions: This case highlights the rarity of primary retroperitoneal Doege-Potter syndrome, emphasizes the safety of intraoperative blood glucose levels during surgery, and suggests rapid recovery of insulin secretion postoperatively.
Competing Interests: The authors have no conflicts of interest to declare.
(© 2024 The Author(s). IJU Case Reports published by John Wiley & Sons Australia, Ltd on behalf of Japanese Urological Association.)