E1603. Hydatid Disease: A Case-Based Review - Pearls, Pitfalls and Mimickers
  1. Julia Niemierko; Institute of Maritime and Tropical Medicine
  2. Anna Wegierska; Institute of Maritime and Tropical Medicine
  3. Ewa Krawczyk; Institute of Maritime and Tropical Medicine
  4. Agnieszka Kaszuba; Institute of Maritime and Tropical Medicine
Hydatid disease, also known as echinococcosis is a result of parasitic infection by the Echinococcus species. World Health Organization estimates that in the endemic regions prevalence in humans can exceed 50 per 100 000 person-years. Although rare in the USA, with about 5 published case reports per year, it is an important entity to consider in the differential diagnosis especially in patients who immigrated from regions of endemic transmission.

Educational Goals / Teaching Points
1. Review epidemiology and pathophysiology of hydatid disease. 2. Discuss distinctive imaging characteristics of echinococcosis. 3. Present treatment methods and prognosis 4. Highlight pathologies which may present similarly to hydatid disease.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
In this exhibit, one will find the case-based review of the clinical and imaging findings of hydatid disease and description of pathologies mimicking echinococcosis: simple cyst, benign adenoma, metastatic lesion, abscess.

Awareness of hydatid disease and its imaging features is of great importance to the practicing radiologists. Today’s volume of human travel and migration is a potent force in the emergence of endemic diseases in previously unaffected locations. Comprehensive evaluation is vital to provide most accurate diagnosis. Suspicion of hydatid disease should impact radiologists' recommendations for clinical approach and further diagnostics.