Spontaneous expulsion of an interesting long standing metallic foreign body (iron nail) from left main bronchus.

Worldwide experiences of spontaneous expulsion of foreign body bronchus ranges between 2-4%. We are reporting here an unusual and interesting case of a long standing irregular metallic large foreign body in left main bronchus, which was lying there for more than one month duration and suddenly while preparing the patient for endoscopic removal, it was expelled out spontaneously. These types of incidences make us wiser to keep the rare and remote possibility in mind, especially when there is a remote but dangerous possibility of subglottic lodgement of foreign body with spontaneous expulsion.