4.7 Article

Disseminated alveolar echinococcosis in a patient diagnosed by metagenomic next-generation sequencing: A case report

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FRONTIERS IN PUBLIC HEALTH
卷 10, 期 -, 页码 -

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FRONTIERS MEDIA SA
DOI: 10.3389/fpubh.2022.972619

关键词

alveolar echinococcosis; next-generation sequencing; Echinococcus multilocularis; diagnose; albendazole (ABZ)

资金

  1. 1.3.5 project for disciplines of excellence-clinical research incubation project, West China Hospital, Sichuan University [2021HXFH032]

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Alveolar echinococcosis (AE) is a highly fatal and disabling parasitic infection with diverse clinical manifestations and difficulties in differential diagnosis. Metagenomic next-generation sequencing (mNGS) has become an attractive approach for the etiological diagnosis of infectious diseases. In this case, mNGS was used to diagnose disseminated AE, which can help improve clinicians' diagnostic skills.
BackgroundAlveolar echinococcosis (AE) is a parasitic zoonosis with high mortality and disability rates. Diverse clinical manifestations and mimicking of differential diagnoses such as tuberculosis and malignancy pose a diagnostic dilemma. With the rapid development of molecular diagnostic techniques in recent years, metagenomic next-generation sequencing (mNGS) has become an attractive approach for the etiological diagnosis of infectious diseases. Case presentationwe report a case of 51-year-old Chinese Tibetan male presented with 3-year low-back pain and 4-month discomfort in the right upper quadrant of the abdomen. He had been in good health. He was diagnosed with tuberculosis and was given anti-tuberculosis treatment a month prior to the visit, but the symptoms were not relieved. Abdominal computerized tomography (CT) revealed a hypodense lesion with uneven enhancement in the liver, and two ring-enhancing cystic lesions in the right abdominal wall. Lumbar spine enhanced MRI showed lesions of mixed density with uneven enhancement in the L1 vertebra and paraspinal tissue. The pathological results of the liver biopsy revealed parasitic infection and possibly echinococcosis. The metagenomic next-generation sequencing (mNGS) of the puncture fluid of abdominal cysts using Illumina X10 sequencer revealed 585 sequence reads matching Echinococcus multilocularis. Disseminated AE was diagnosed. Albendazole (400 mg, twice daily) was used, and the patient was in stable condition during follow-up. ConclusionsmNGS may be a useful tool for the diagnosis of AE. The case would help clinicians to improve their diagnostic skills.

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