Diagnostic challenge of glucagonoma: case report and literature review.

Objective: To report the diagnostic difficulties encountered in a case of glucagonoma.

Methods: We provide a literature review and present the clinical findings, pertinent laboratory data, and results of related studies in a patient with a glucagonoma.

Results: A 54-year-old-man, with no relevant history of endocrine disorders, presented to the hospital with a 5-year history of recurrent stomatitis and glossitis, a more recent weight loss of 11.