Perforation of the vermiform appendix into the retroperitoneal space; report of two cases.
D000038:Abscess; D001064:Appendicitis; D001065:Appendix; D006801:Humans; D016658:Psoas Muscles; D012187:Retroperitoneal Space; D012421:Rupture
ABSCESS; APPENDIX/rupture; MUSCLES, PSOAS/abscess