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酒精性肝炎伴高铁蛋白血症和转铁蛋白饱和度严重升高,酷似铁过载疾病:一例报告

Alcoholic Hepatitis Mimicking Iron Overload Disorders With Hyperferritinemia and Severely Elevated Transferrin Saturation: A Case Report.

作者信息

Munankami Salina, Amin Shefali, Shrestha Manish, Paudel Rubina, Pokhrel Arpan

机构信息

General Medicine, Kathmandu Medical College, Kathmandu, NPL.

Internal Medicine, Reading Tower Health, Reading, USA.

出版信息

Cureus. 2023 Jul 11;15(7):e41727. doi: 10.7759/cureus.41727. eCollection 2023 Jul.

Abstract

Iron overload disorders can present as non-specific symptoms and develop gradually but, if untreated, can be very fatal. The common causes include multiple blood transfusions for chronic anemia and increased iron absorption, including hereditary hemochromatosis (HH). HH is one of the common causes of iron overload disorders and usually presents with liver cirrhosis in a setting of significantly elevated ferritin and elevated transferrin saturation. Alcoholic hepatitis is a clinical syndrome of progressive inflammatory liver injury associated with long-term heavy intake of ethanol. However, in patients with alcohol abuse, excessive alcohol consumption can disrupt iron metabolism releasing large amounts of iron into circulation. This can cause severely elevated ferritin due to disruption of iron metabolism, simulating iron overload disorders such as HH, especially if the patient also has liver cirrhosis. Even though a high transferrin saturation of greater than 45% is recommended as a cutoff transferrin value as high sensitivity for detecting iron overload disorders, it has a low specificity and positive predictive value and often identifies people with other causes of acutely elevated ferritin levels such as alcohol liver disease and hepatitis. Recognizing this feature and timely management can spare the patient from unnecessary phlebotomies and prompt treatment for alcoholic hepatitis. We present an interesting case of severe alcoholic hepatitis mimicking HH with severely elevated ferritin levels and transferrin saturation with underlying liver cirrhosis.

摘要

铁过载疾病可能表现为非特异性症状并逐渐发展,但如果不治疗,可能会非常致命。常见原因包括慢性贫血的多次输血以及铁吸收增加,包括遗传性血色素沉着症(HH)。HH是铁过载疾病的常见原因之一,通常在铁蛋白显著升高和转铁蛋白饱和度升高的情况下出现肝硬化。酒精性肝炎是一种与长期大量摄入乙醇相关的进行性炎症性肝损伤的临床综合征。然而,在酗酒患者中,过量饮酒会扰乱铁代谢,将大量铁释放到循环中。这可能由于铁代谢紊乱导致铁蛋白严重升高,模拟HH等铁过载疾病,特别是如果患者同时患有肝硬化。尽管建议将大于45%的高转铁蛋白饱和度作为检测铁过载疾病的高灵敏度截断转铁蛋白值,但它的特异性和阳性预测值较低,并且经常会识别出患有其他导致铁蛋白水平急性升高原因的人,如酒精性肝病和肝炎。认识到这一特征并及时处理可以避免患者进行不必要的放血,并及时治疗酒精性肝炎。我们报告一例有趣的严重酒精性肝炎病例,该病例模拟HH,铁蛋白水平和转铁蛋白饱和度严重升高,伴有潜在的肝硬化。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/58c5/10415023/6b3aaa74d7e0/cureus-0015-00000041727-i01.jpg

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