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Updated: Jul 17, 2026

Transient Transduction of the Strobilated Forms of Echinococcus granulosus
Published on: September 16, 2022
[Ruptured echinococcal cyst]
Åse Garløv Riis1, Mogens Jensenius2, Ole Jacob Greve3
1Infeksjonsmedisinsk avdeling, Stavanger universitetssjukehus.
Background:
Cystic echinococcosis is a zoonosis caused by the parasite Echinococcus granulosus. The disease rarely occurs in Norway, but constitutes a significant global health issue.
Case Presentation:
A man in his forties presented with right-sided flank pain. CT scan of thorax and abdomen revealed a 10 cm cystic lesion in the liver, suggestive of cystic echinococcosis. Serological test for specific antibodies was positive. Before transfer to a tertiary centre for liver surgery, he developed a cough. Repeated CT scan of thorax and abdomen showed perforation of the liver cyst through the diaphragm and into the right lung. He underwent a thoracolaparotomy and en bloc resection of liver segments 5, 7, 8, adjacent part of the diaphragm, and right lower and middle lung lobe.
Interpretation:
With increasing immigration, we believe it is imperative for healthcare professionals in regions with low prevalence of cystic echinococcosis to consider the possibility of this disease when encountering patients with unexplained liver cysts and relevant exposure.
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