Article ; Online: An infantile case of hereditary folate malabsorption with sudden development of pulmonary hemorrhage: a case report.
Journal of medical case reports
2022 Volume 16, Issue 1, Page(s) 268
Abstract: Background: Hereditary folate malabsorption-a rare disorder caused by impairment of the folate transporter-can develop into severe folate deficiency manifesting as megaloblastic anemia and occasionally thrombocytopenia. Reportedly, megaloblastic anemia ... ...
Abstract | Background: Hereditary folate malabsorption-a rare disorder caused by impairment of the folate transporter-can develop into severe folate deficiency manifesting as megaloblastic anemia and occasionally thrombocytopenia. Reportedly, megaloblastic anemia can manifest with hemorrhagic episodes, possibly due to ineffective platelet production and platelet dysfunction. However, life-threatening hemorrhage events in hereditary folate malabsorption have not been well investigated. Case presentation: A 3-month-old Japanese boy was transferred to our hospital due to thrombocytopenia and severe megaloblastic anemia. During a thorough examination of hematopoietic abnormalities, the patient suddenly went into cardiac arrest due to pulmonary hemorrhage. Although intravenous folate supplementation was started soon after the identification of folate deficiency, the patient died of circulatory defect and multiple organ failure. The cause of pulmonary hemorrhage, such as respiratory infection, could not be confirmed. Genetic investigation revealed a mutation in the SLC46A1 gene to be the cause of the hereditary folate malabsorption. Conclusion: We report an infantile case of hereditary folate malabsorption that progressed to lethal pulmonary hemorrhage before folate deficiency was identified. Clinicians should consider that megaloblastic anemia could lead to severe bleeding without warning, and that nutrient supplementation should be initiated as soon as possible. |
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MeSH term(s) | Anemia, Megaloblastic/etiology ; Folic Acid/therapeutic use ; Folic Acid Deficiency ; Hemorrhage/etiology ; Humans ; Infant ; Malabsorption Syndromes ; Male ; Proton-Coupled Folate Transporter/genetics ; Thrombocytopenia/complications |
Chemical Substances | Proton-Coupled Folate Transporter ; SLC46A1 protein, human ; Folic Acid (935E97BOY8) |
Language | English |
Publishing date | 2022-06-30 |
Publishing country | England |
Document type | Case Reports ; Journal Article |
ZDB-ID | 2269805-X |
ISSN | 1752-1947 ; 1752-1947 |
ISSN (online) | 1752-1947 |
ISSN | 1752-1947 |
DOI | 10.1186/s13256-022-03448-x |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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