Metformin-Associated Functional Vitamin B12 Deficiency Presenting as Subacute Combined Degeneration in a 57-Year-Old Man With Diabetes Mellitus

26 April 2026 : Case report China

Unusual clinical course, Challenging differential diagnosis, Rare coexistence of disease or pathology

Ruixiang Zhang^{ABCDEF 1,2,3}, Luoning Gou^{ADFG 1,2,3*}, Xinrong Zhou^{ABCDG 1,2,3}

DOI: 10.12659/AJCR.952205

Am J Case Rep 2026; 27:e952205

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Figure 1 Barium swallow and abdominal radiograph(A) Barium swallow radiograph; (B) plain abdominal radiograph.

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