Pneumopericardium in a child – “halo sign” on chest x-ray: A Case Report Authors Alina Sadaf Department of Pediatric Oncology, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Pakistan Aqeela Rashid Department of Pediatric Oncology, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Pakistan Sadia Omer Department of Pediatric Intensive Care, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Pakistan DOI: https://doi.org/10.47391/JPMA.9393 Keywords: Pneumopericardium, Halo sign Abstract A 5 year old boy with acute lymphoblastic leukemia on chemotherapy presented with chest pain and vomiting for two days after an elective procedure under general anesthesia. His chest x-ray was remarkable for a prominent halo sign, an air gap surrounding the heart indicating a large pneumopericardium. Although the pneumopericardium could not be appreciated on an echocardiogram, the child developed clinical signs of cardiac tamponade. Attempts to evacuate the pneumopericardium were unsuccessful leading to death. Keywords: Pneumopericardium, Halo sign. Author Biographies Aqeela Rashid, Department of Pediatric Oncology, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Pakistan Full time pediatric oncology consultant Sadia Omer, Department of Pediatric Intensive Care, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Pakistan Full time pediatric intensive care consultant Downloads Full Text Article Published 2024-02-11 How to Cite Sadaf, A., Rashid, A., & Omer, S. (2024). Pneumopericardium in a child – “halo sign” on chest x-ray: A Case Report. Journal of the Pakistan Medical Association, 74(3), 580–581. https://doi.org/10.47391/JPMA.9393 More Citation Formats ACM ACS APA ABNT Chicago Harvard IEEE MLA Turabian Vancouver Download Citation Endnote/Zotero/Mendeley (RIS) BibTeX Issue Vol. 74 No. 3 (2024): MARCH Section CASE REPORT License Copyright (c) 2024 Journal of the Pakistan Medical Association This work is licensed under a Creative Commons Attribution 4.0 International License.