Insulinoma differential diagnosis: Difference between revisions
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==Differentiating insulinoma from other Diseases== | ==Differentiating insulinoma from other Diseases== | ||
* | *Insulinoma must be differentiated from other diseases that cause features of hypoglycemia. These are classified on the basis of laboratory findings. | ||
===Differentials for [[Hypoglycemia]] on the basis of Laboratory findings<ref name="pmid19088155">{{cite journal| author=Cryer PE, Axelrod L, Grossman AB, Heller SR, Montori VM, Seaquist ER et al.| title=Evaluation and management of adult hypoglycemic disorders: an Endocrine Society Clinical Practice Guideline. | journal=J Clin Endocrinol Metab | year= 2009 | volume= 94 | issue= 3 | pages= 709-28 | pmid=19088155 | doi=10.1210/jc.2008-1410 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19088155 }} </ref>:=== | |||
===Differentials for [[Hypoglycemia]] on the basis of Laboratory findings:=== | |||
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Revision as of 16:40, 28 August 2017
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Amandeep Singh M.D.[2]
Overview
Insulinoma must be differentiated from other diseases that cause features of hypoglycemia like palpitations, profuse sweating, dizziness, such as [differential dx1], [differential dx2], and [differential dx3].
OR
Insulinoma must be differentiated from the exogenous use of insulin, drugs causing hypoglycemia like sulfonylureas.
Differentiating insulinoma from other Diseases
- Insulinoma must be differentiated from other diseases that cause features of hypoglycemia. These are classified on the basis of laboratory findings.
Differentials for Hypoglycemia on the basis of Laboratory findings[1]:
| Diagnoses | Laboratory Findings differentiating among causes of Hypoglycemia | |||||||
|---|---|---|---|---|---|---|---|---|
| S.Glucose (mg/dL)/(mmol/L) |
C Peptide (pmol/L) | S.Insulin (μU/mL)/(pmol/L) | S.Proinsulin (pmol/L) |
S. Beta hydroxybutyrate | Glucose increase after glucagon(mg/dL) | Oral Hypoglycemic agent | Antibodies to Insulin | |
| Exogenous Insulin | <55/2.5 | <200 | >>3 | <5 | ≤2.7 | >25 | - | - |
| Insulinoma/Nesidioblastosis/PGPH† | <55 | ≥200 | ≥3 | ≥5 | ≤2.7 | >25 | - | - |
| Insulin Autoimmune hypoglycemia | <55 | >>200‡ | >>3 | >>5‡ | ≤2.7 | >25 | - | + |
| Oral hypoglycemic agent | <55 | ≥200 | ≥3 | ≥5 | ≤2.7 | >25 | + | - |
| Normal/Fasting | <55 | <200 | <3/20.8 | <5 | >2.7 | <25 | - | - |
† PGPH= Post Gastric Bypass Hypoglycemia ‡ Free C-peptide and proinsulin concentrations are low
References
- ↑ Cryer PE, Axelrod L, Grossman AB, Heller SR, Montori VM, Seaquist ER; et al. (2009). "Evaluation and management of adult hypoglycemic disorders: an Endocrine Society Clinical Practice Guideline". J Clin Endocrinol Metab. 94 (3): 709–28. doi:10.1210/jc.2008-1410. PMID 19088155.