Which Schistosoma species is primarily associated with eggs being discharged in urine?
AS. haematobium
BS. japonicum
CS. mansoni
DS. mekongi
A 52-year-old recent immigrant from Vietnam presents with abdominal swelling, weight loss, and upper abdominal pain of three weeks' duration. His past medical history includes malaria and infection with Clonorchis sinensis. On palpation, the liver is hard. An abdominal CT scan reveals a hypo-attenuated mass with lobulated margins in the liver, and a biopsy shows well-differentiated neoplastic glands embedded in a dense fibrous stroma. What is the most likely diagnosis?
ACholangiocarcinoma
BGallbladder carcinoma
CAngiosarcoma
DHepatic adenoma
Which of the following statements about trematodes is true?
ASegmented
BAnus present
CBody cavity present
DTwo hosts required
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