Intestinal nematode (Ascaris lumbricoides)

Case contributed by Dr Subash Thapa


Abdominal discomfort and pain with decreased hemoglobin level.

Patient Data

Age: 20 years
Gender: Female

There are few freely mobile, long hypoechoic blind ending tubular structure with well-defined echogenic wall within the bowel lumen.

Case Discussion

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.

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Case information

rID: 40122
Published: 9th Oct 2015
Last edited: 16th Jul 2018
Inclusion in quiz mode: Included

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