Intestinal nematode (Ascaris lumbricoides)
Abdominal discomfort and pain with decreased hemoglobin level.
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There are few freely mobile, long hypoechoic blind ending tubular structure with well-defined echogenic wall within the bowel lumen.
Ascaris lumbricoidoes, the intestinal nematode is the largest parasite in the human measuring up to 40cm long 1.
They may be asymptomatic or a large bolus of worm entangled can result in intestinal obstruction or perforation.
Some large worm migrates through biliary tract causing obstruction, biliary coli, cholecystitis, cholangitis or even intrahepatic abscess (rare)
Some large worm can even manage to migrate up to esophagus provoking coughing and oral expulsion of the worm.
- 1. Kasper D, Fauci A, Hauser S et-al. Harrison's principles of internal medicine. McGraw-Hill Education / Medical. ISBN:0071802150. Read it at Google Books - Find it at Amazon