A 35-year-old man presents with chronic diarrhoea and megaloblastic anaemia (haemoglobin 8.2 g/dL, MCV 112 fL, low serum vitamin B12). He regularly ea...

Question

A 35-year-old man presents with chronic diarrhoea and megaloblastic anaemia (haemoglobin 8.2 g/dL, MCV 112 fL, low serum vitamin B12). He regularly eats raw freshwater fish in Finland. Stool microscopy reveals operculated eggs approximately 60 × 40 µm. What is the most likely causative organism?

Accepted Answer

Diphyllobothrium latum

Answer

Taenia saginata

Answer

Taenia solium

Answer

Hymenolepis nana

Answer

Clonorchis sinensis

uk-dtmh MCQ (SBA): Diphyllobothriasis

A 35-year-old man presents with chronic diarrhoea and megaloblastic anaemia (haemoglobin 8.2 g/dL, MCV 112 fL, low serum vitamin B12). He regularly eats raw freshwater fish in Finland. Stool microscopy reveals operculated eggs approximately 60 × 40 µm. What is the most likely causative organism?