A definitive diagnosis of ascariasis can be made by?
|A||An eosinophilia in a differential white blood cell count.|
|B||Motile larvae in a stool sample.|
|C||Larvae in x-ray of lungs.|
|D||An adult worm passed during a bowel movement.|
a. Identification of adult worms passed by an individual can ensure a definitive diagnosis.
b. Although an eosinophilia accompanies ascariasis, this condition can be caused by other infections and by various allergic conditions.
c. Motile larvae in a stool are indicative of infection with Strongyloides stercoralis. Nematode larvae cannot be seen in an x-ray.