Pericardial effusion due to penetration of the pericardium by a swallowed needle.
D000059:Accidents; D002675:Child, Preschool; D005547:Foreign Bodies / Q000150:complications*; D006801:Humans; D008297:Male; D009339:Needles; D010490:Pericardial Effusion / Q000209:etiology*; D010496:Pericardium / Q000293:injuries*; D012572:School Health Services