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Updated: Aug 11, 2025
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Mass Isolation and In Vitro Cultivation of Intramolluscan Stages of the Human Blood Fluke Schistosoma Mansoni
Published on: January 14, 2018
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[Multilocular hepatic masses due to Enterobius vermicularis]
1Klinik für Gastroenterologie, Hepatologie, Hämatologie, Onkologie, Palliativmedizin, Helios Park-Klinikum Leipzig, Strümpellstr. 41, 04289, Leipzig, Deutschland.
Innere Medizin (Heidelberg, Germany)
|February 2, 2023
Summary
Extraintestinal manifestation of pinworm (Enterobius vermicularis) infestation is rare. This case highlights parasitic granulomas in the liver, mimicking cancer, due to hematogenous spread from an infected mesenteric vein.
Area of Science:
- Gastroenterology
- Parasitology
- Oncology
Background:
- Extraintestinal manifestations of Enterobius vermicularis are uncommon.
- Pinworm infections typically present with gastrointestinal symptoms.
Observation:
- A 50-year-old male presented with lower abdominal pain.
- Computed tomography suggested sigmoid carcinoma with liver metastasis.
- Endoscopy ruled out colon cancer.
Findings:
- Laparoscopic liver resection revealed parasitic granulomas containing pinworms.
- Histopathology confirmed Enterobius vermicularis.
- Hematogenous migration via inferior mesenteric vein phlebitis and thrombosis was the proposed mechanism.
Implications:
- This case underscores the importance of considering parasitic infections in the differential diagnosis of liver nodules, even when malignancy is suspected.
- It highlights a rare route of parasitic dissemination, emphasizing the need for thorough histopathological examination.
- Understanding such rare presentations can improve diagnostic accuracy and patient management in cases of suspected metastatic disease.
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