In this prospective study the types of foreign body ingested, sites of
impaction, radiographical findings, management and outcome in 81 pati
ents were recorded. We have demonstrated that foreign bodies can be co
nveniently divided into 'fish bones' and 'others', in terms of their s
ites of impaction (P < 0.0001), the age groups affected, whether dentu
res were worn or not (P < 0.02) and their respective management (P < 0
.001). Statistical analysis supporting these observations has not been
previously reported.