After a frightening coughing episode, a 5-year-old boy with a congenital heart condition expectorated what is shown in the image sent by his father (Fig. 1). He had no fever or signs of chest infection. What is your diagnosis?
Fig. 1
A picture sent by the father showing a expectorated product with a 5 € Cent coin (20 mm) as a size reference
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.