Identify the following radiological finding which is denoting in image?

QZQo5CjkbNw0ChEP5d-NmK
E6 Nelson Textbook of Pediatrics(2024) — Volume 2 p. 444-446
Practise the full NORCET -4 , 2023
Attempt every question from this paper in a timed mock, then review the full solution for each one.