This is a smaller worm , compared to Ascaris lumbricoides (male, 30-45 mm; female, 35-50 mm).The worm buries its thin, threadlike anterior half into the intestinal mucosa and feeds on tissue secretions, not blood. This relative tissue invasion causes occasional eosinophilia. The cecum and colon are the most commonly infected - but this type of worms don't "migrate" through tissue/lungs, like the woundworms, but the larvae will hatch and grow in the small intestine, and migrate to the large inntestine, where females can lay eggs for almost 5 years.