Post-COVID-19 vitamin B12 deficiency presenting as pseudo-thrombotic microangiopathy: a case report and review of diagnostic pitfalls

Abstract Introduction Vitamin B12 deficiency can rarely manifest as pseudo-thrombotic microangiopathy (PTMA), a hematologic syndrome that mimics thrombotic thrombocytopenic purpura (TTP). This case emphasizes the diagnostic challenge of PTMA in elderly, post-COVID-19 patients, and highlights the imp...

Full description

Bibliographic Details

Published in:	The Egyptian Journal of Internal Medicine
Main Authors:	Nhu Nguyen, Thy Le, Thuan Tran, Nghia Nguyen, Anusree Chakraborty, Anh Le Vu, Minh Huu Nhat Le
Format:	Article
Language:	English
Published:	SpringerOpen 2025-09-01
Subjects:	Vitamin B12 deficiency Pseudo-thrombotic microangiopathy Macrocytic anemia Thrombotic microangiopathy Case report
Online Access:	https://doi.org/10.1186/s43162-025-00518-6