Echinococcus granulosus (Hydatid disease)

A 35-year-old man presents to an urgent care center for evaluation of right upper quadrant pain, which has been progressing for the past four months. In addition, the patient has had intermittent episodes of nausea and vomiting. He immigrated from Guatemala around a year ago. The patient does not consume alcohol or tobacco products. Past medical history is notable for hypertension. The temperature is 37.8°C (99.9°F), pulse is 78/min, and blood pressure is 141/80 mmHg. Pain is elicited with palpation of the right upper quadrant. Abdominal imaging is shown below. Which of the following pathogens is most likely responsible for this patient’s symptoms?



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