A patient came to the emergency room with jaundice and abdom…

A patient came to the emergency room with jaundice and abdominal pain.  Liver enzymes were elevated but testing for viral hepatitis was negative.  Stool samples revealed a large (70×140 um), brown, operculated egg with no knob at the opposite end.  What is the most likely occupation of this patient?

A 4-year-old boy attended day care 3 days per week. He was i…

A 4-year-old boy attended day care 3 days per week. He was irritable and his parents noticed that he had persistent perianal itching. A sticky paddle was pressed against the perianal region and sent to the laboratory for testing. The eggs observed would most likely have which one of the following microscopic morphologic features?