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Insulinoma masquerading as factitious hypoglycemia.
South Med J. 1998 Nov; 91(11):1067-9.SM

Abstract

A 36-year-old woman without significant medical history complained of "spells" of diplopia, fatigue, and dizziness. On formal fasting, her glucose dropped to 40 mg/dL, with simultaneous insulin levels of 15 microU/mL (normal <6 microU/mL) and C-peptide of 2.5 ng/ml (normal <2 ng/mL). An isolated plasma sulfonylurea screen done during the fast was positive for tolbutamide, suggesting the diagnosis of factitious hypoglycemia, but further workup revealed multiple pancreatic masses resulting in an eventual diagnosis of multiple insulinomas that was confirmed surgically. We discuss the approach to hypoglycemia caused by insulin excess and distinguishing clinical and biochemical features.

Authors+Show Affiliations

Department of Medicine, Louisiana State University Medical Center, New Orleans 70112, USA.No affiliation info availableNo affiliation info available

Pub Type(s)

Case Reports
Journal Article

Language

eng

PubMed ID

9824194

Citation

Baddley, J W., et al. "Insulinoma Masquerading as Factitious Hypoglycemia." Southern Medical Journal, vol. 91, no. 11, 1998, pp. 1067-9.
Baddley JW, Daberkow D, Hilton CW. Insulinoma masquerading as factitious hypoglycemia. South Med J. 1998;91(11):1067-9.
Baddley, J. W., Daberkow, D., & Hilton, C. W. (1998). Insulinoma masquerading as factitious hypoglycemia. Southern Medical Journal, 91(11), 1067-9.
Baddley JW, Daberkow D, Hilton CW. Insulinoma Masquerading as Factitious Hypoglycemia. South Med J. 1998;91(11):1067-9. PubMed PMID: 9824194.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Insulinoma masquerading as factitious hypoglycemia. AU - Baddley,J W, AU - Daberkow,D, AU - Hilton,C W, PY - 1998/11/21/pubmed PY - 1998/11/21/medline PY - 1998/11/21/entrez SP - 1067 EP - 9 JF - Southern medical journal JO - South Med J VL - 91 IS - 11 N2 - A 36-year-old woman without significant medical history complained of "spells" of diplopia, fatigue, and dizziness. On formal fasting, her glucose dropped to 40 mg/dL, with simultaneous insulin levels of 15 microU/mL (normal <6 microU/mL) and C-peptide of 2.5 ng/ml (normal <2 ng/mL). An isolated plasma sulfonylurea screen done during the fast was positive for tolbutamide, suggesting the diagnosis of factitious hypoglycemia, but further workup revealed multiple pancreatic masses resulting in an eventual diagnosis of multiple insulinomas that was confirmed surgically. We discuss the approach to hypoglycemia caused by insulin excess and distinguishing clinical and biochemical features. SN - 0038-4348 UR - https://www.unboundmedicine.com/medline/citation/9824194/Insulinoma_masquerading_as_factitious_hypoglycemia_ DB - PRIME DP - Unbound Medicine ER -