“…Fruits, seeds, granules, buttons, dirt, insects, sand, peas, parasites, wood, glass and residues of gauze plugs are examples of exogenous sources (4,5,7-11). The latter items must be introduced into the nasal cavity, and this can occur anteriorly through the nostrils (generally inserted by children) or reach the posterior opening through the rhinopharynx and choanals during episodes of vomiting, sneezing and choking (3,9,11). In addition, other factors may contribute to its formation, such as obstruction or stagnation of nasal secretions, chronic and acute inflammations, deposition of calcium or magnesium salts and the enzymatic activities of bacterial pathogens (3).…”