Unilocular hydatid cyst disease: a challenging diagnosis

Echinococcosis, a disease uncommon in the United States, is extremely rare in South Dakota, although it is endemic in several regions of the United States and prevalent in certain areas of the world. Due to the mobile state of the world's population, recognition of this disease is important. Echinococcosis carries the potential for significant morbidity and mortality which can be minimized by appropriate surgical management. Awareness of this disease and proper history taking will allow the physician to make the often challenging diagnosis.