A 12 year old boy was brought in by his mother for evaluation, the patient had been having crampy abdominal pain and some diarrhea for the preceeding 1 to 2 weeks. On the afternoon of his evaluation, the patient thought he had had an "accident" in his pants. When he looked in his underpants, he "saw something move" that his mother "captured". She told his pediatrician that she thought she had recovered "an earthworm". He had no fever, cough or blood-tinged sputum. His travel history was unremarkable. Physical examination was unremarkable as well, and no other worms or larvae were seen on anal examination. Question Which organs can this organism invade? What symptoms can be caused if organ invasion occurs?

A 12 year old boy was brought in by his mother for evaluation, the patient had been having crampy abdominal pain and some diarrhea for the preceeding 1 to 2 weeks. On the afternoon of his evaluation, the patient thought he had had an "accident" in his pants. When he looked in his underpants, he "saw something move" that his mother "captured". She told his pediatrician that she thought she had recovered "an earthworm". He had no fever, cough or blood-tinged sputum. His travel history was unremarkable. Physical examination was unremarkable as well, and no other worms or larvae were seen on anal examination. Question Which organs can this organism invade? What symptoms can be caused if organ invasion occurs?