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Natural History, Clinicoradiologic Correlates, and Response to Triclabendazole in Acute Massive Fascioliasis

Luis A. MarcosThe University of Texas Health Science Center at Houston Medical School, Houston, Texas; Institute of Tropical Medicine Alexander von Humboldt (IMTAvH), Universidad Peruana Cayetano Heredia (UPCH), Lima, Perú; Gastroenterology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; Radiology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; University of Alabama at Birmingham, Birmingham, Alabama; Division of Infectious Diseases, Department of Medicine, University of California San Diego, La Jolla, California

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Martin TagleThe University of Texas Health Science Center at Houston Medical School, Houston, Texas; Institute of Tropical Medicine Alexander von Humboldt (IMTAvH), Universidad Peruana Cayetano Heredia (UPCH), Lima, Perú; Gastroenterology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; Radiology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; University of Alabama at Birmingham, Birmingham, Alabama; Division of Infectious Diseases, Department of Medicine, University of California San Diego, La Jolla, California

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Angelica TerashimaThe University of Texas Health Science Center at Houston Medical School, Houston, Texas; Institute of Tropical Medicine Alexander von Humboldt (IMTAvH), Universidad Peruana Cayetano Heredia (UPCH), Lima, Perú; Gastroenterology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; Radiology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; University of Alabama at Birmingham, Birmingham, Alabama; Division of Infectious Diseases, Department of Medicine, University of California San Diego, La Jolla, California

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Alejandro BussalleuThe University of Texas Health Science Center at Houston Medical School, Houston, Texas; Institute of Tropical Medicine Alexander von Humboldt (IMTAvH), Universidad Peruana Cayetano Heredia (UPCH), Lima, Perú; Gastroenterology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; Radiology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; University of Alabama at Birmingham, Birmingham, Alabama; Division of Infectious Diseases, Department of Medicine, University of California San Diego, La Jolla, California

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Cesar RamirezThe University of Texas Health Science Center at Houston Medical School, Houston, Texas; Institute of Tropical Medicine Alexander von Humboldt (IMTAvH), Universidad Peruana Cayetano Heredia (UPCH), Lima, Perú; Gastroenterology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; Radiology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; University of Alabama at Birmingham, Birmingham, Alabama; Division of Infectious Diseases, Department of Medicine, University of California San Diego, La Jolla, California

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Carlos CarrascoThe University of Texas Health Science Center at Houston Medical School, Houston, Texas; Institute of Tropical Medicine Alexander von Humboldt (IMTAvH), Universidad Peruana Cayetano Heredia (UPCH), Lima, Perú; Gastroenterology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; Radiology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; University of Alabama at Birmingham, Birmingham, Alabama; Division of Infectious Diseases, Department of Medicine, University of California San Diego, La Jolla, California

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Luis ValdezThe University of Texas Health Science Center at Houston Medical School, Houston, Texas; Institute of Tropical Medicine Alexander von Humboldt (IMTAvH), Universidad Peruana Cayetano Heredia (UPCH), Lima, Perú; Gastroenterology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; Radiology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; University of Alabama at Birmingham, Birmingham, Alabama; Division of Infectious Diseases, Department of Medicine, University of California San Diego, La Jolla, California

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Jorge Huerta-MercadoThe University of Texas Health Science Center at Houston Medical School, Houston, Texas; Institute of Tropical Medicine Alexander von Humboldt (IMTAvH), Universidad Peruana Cayetano Heredia (UPCH), Lima, Perú; Gastroenterology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; Radiology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; University of Alabama at Birmingham, Birmingham, Alabama; Division of Infectious Diseases, Department of Medicine, University of California San Diego, La Jolla, California

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David O. FreedmanThe University of Texas Health Science Center at Houston Medical School, Houston, Texas; Institute of Tropical Medicine Alexander von Humboldt (IMTAvH), Universidad Peruana Cayetano Heredia (UPCH), Lima, Perú; Gastroenterology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; Radiology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; University of Alabama at Birmingham, Birmingham, Alabama; Division of Infectious Diseases, Department of Medicine, University of California San Diego, La Jolla, California

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Joseph M. VinetzThe University of Texas Health Science Center at Houston Medical School, Houston, Texas; Institute of Tropical Medicine Alexander von Humboldt (IMTAvH), Universidad Peruana Cayetano Heredia (UPCH), Lima, Perú; Gastroenterology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; Radiology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; University of Alabama at Birmingham, Birmingham, Alabama; Division of Infectious Diseases, Department of Medicine, University of California San Diego, La Jolla, California

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Eduardo GotuzzoThe University of Texas Health Science Center at Houston Medical School, Houston, Texas; Institute of Tropical Medicine Alexander von Humboldt (IMTAvH), Universidad Peruana Cayetano Heredia (UPCH), Lima, Perú; Gastroenterology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; Radiology Service, Hospital Nacional Cayetano Heredia, Lima, Perú; University of Alabama at Birmingham, Birmingham, Alabama; Division of Infectious Diseases, Department of Medicine, University of California San Diego, La Jolla, California

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Fascioliasis is highly endemic in the Andean region of South America. Newer serological assays have improved our ability to diagnose acute fascioliasis. The diagnosis was established by Fasciola hepatica serology (Fas2-ELISA or Western blot) in 10 patients. Identifiable exposure included ingestion of watercress (N = 8), alfalfa juice (N = 5), and lettuce (N = 1). Computed tomography of the abdomen showed hepatomegaly (N = 9), track-like hypodense lesions with subcapsular location (N = 8), and subcapsular hematoma (N = 2). Radiologic sequelae included cyst calcifications detectable at least 3 years after treatment. Stool examinations were negative for F. hepatica eggs; serology was positive (Arc II [N = 2], Fas2-ELISA [N = 6], Western blot [N = 2]). The syndrome of eosinophilia, fever, and right upper quadrant pain, elevated transaminases without jaundice, hypodense liver lesions on CT, and an appropriate exposure history suggests acute fascioliasis. Fascioliasis is specifically treatable with a single dose of triclabendazole.

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