Kumar Patel, V., Gaharwar, A., S Batra, R. and Patel, U. 2014. Perforated Retroperitoneal Appendicitis Presenting as Extensive Subcutaneous Emphysema of Abdominal and Chest Wall: An Unusual Presentation. International Journal of Medical Research and Review. 2, 5 (Oct. 2014), 511-514. DOI:https://doi.org/10.17511/ijmrr.2014.i05.18.