We would like to thank Dr Rosh for his thoughtful comments and interest in our recently published article concerning coin ingestions in children.1
He has stated that it would be helpful to know the likelihood of spontaneous coin passage based on the patient age and size, and the coin denomination. In terms of the patient age, we found that patients with spontaneous coin passage had a mean age of 56.8 months, compared with an age of 46.1 months for those without spontaneous passage. Although this did not reach statistical significance, we did find a statistically significant difference in the mean age of patients between the simple and complex cases, possibly indicating a lower likelihood of spontaneous passage and subsequent delayed diagnoses in younger children. It seems logical, therefore, to assume that younger (and hence smaller) patients may be less likely to spontaneously pass coins compared with their larger counterparts.
Soprano JV, Fleisher GR, Mandl KD. Spontaneous Passage of Esophageal Coins Questionable. Arch Pediatr Adolesc Med. 2000;154(10):1061-1062. doi: