[A case of Diphyllobothrium latum infection in a patient with abdominal pain]. 
The growing popularity of eating raw fish has resulted in increase of certain human parasitic infection, such as diphyllobothriasis.  Even though, upper and lower gastrointestinal endoscopy reveal no specific abnormality, if a patient complains of persistent abdominal pain, we should consider the possibility of parasitic infection.  Careful history taking and stool examination can avoid further invasive study.  We report a case of Diphyllobothrium latum infection in a patient with vague abdominal pain who showed normal finding on endoscopy.