Assertion: obstruction's cause | /r/HasProperty | foreign bodies
Facets:
Source sentences:
text: Less common causes of obstruction include intestinal intussusception, volvulus, intra-abdominal abscesses, gallstones, and foreign bodies.
text: Other causes include eyelid disorders , infections by bacteria, viruses, fungi, and parasites, inflammations, the use of eye drops or excessive nasal spray, systemic chemotherapy , trauma from previous surgeries, injury to the bone at the side of the nose, foreign bodies, sinus disease, nasal polyps , and malignant or benign tumors.