Outside the Thorax: Doege–Potter Syndrome Presenting as a Retroperitoneal Abdominal Mass

Table 1

Relevant laboratory values and corresponding reference ranges.

Test	Result	Range
Plasma glucose after dextrose discontinuation	47 mg/dL
C-peptide	0.1 ng/mL	0.9–7.1 ng/mL
Beta-hydroxybutyrate	0.10 mmol/L	<0.40 mmol/L
Pro-insulin	2.8 pmol/L	3.6–22 pmol/L
Insulin	<2.0 mIU/mL	2.5–24.0 mIU/mL
Insulin-like growth factor-2	382 ng/mL	333–967 ng/mL
Insulin antibodies	Negative