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Migrating and herniating hydatid cysts.
1Başkent University, Faculty of Medicine, Department of Radiology, Adana, Turkey. koczafer@gmail.com
European Journal of Radiology
|April 25, 2007
Summary
Hydatid cysts (HCs) can migrate or herniate due to pressure differences, sometimes aided by gravity or previous surgery. Awareness of this potential migration is crucial for managing hydatid disease (HD).
Area of Science:
- Radiology
- Infectious Diseases
- Surgical Pathology
Background:
- Hydatid disease (HD) is a parasitic infection caused by Echinococcus tapeworms.
- Hydatid cysts (HCs) typically occur in the liver but can affect other organs.
- Migration or herniation of HCs is an uncommon but significant complication.
Purpose of the Study:
- To determine the prevalence of hydatid cyst migration or herniation.
- To describe the imaging findings associated with migrating or herniating HCs.
- To highlight the clinical significance of this phenomenon in patients with HD.
Main Methods:
- A retrospective review of 212 patients diagnosed with HD between May 2003 and June 2006 using CT scans.
- Identification and evaluation of imaging findings in 7 patients with transdiaphragmatic migration or femoral herniation of HCs.
- Confirmation of diagnosis and migration/herniation by pathological examination and surgical findings.
Main Results:
- Liver HD was present in 169 (79.7%) of the 212 patients.
- Transdiaphragmatic migration of HCs occurred in 6 (3.5%) of patients with liver HD.
- One case of femoral herniation of a retroperitoneal HC was observed; all seven patients had active HCs with daughter cysts. Two patients had prior liver HD surgery.
Conclusions:
- Active HCs can migrate or herniate due to pressure gradients and gravity, potentially influenced by prior surgery.
- The possibility of HC migration or herniation should be considered in patients with HD, especially before surgical intervention.
- Understanding these migration patterns is essential for accurate diagnosis and effective management of hydatid disease.
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