title: A pathognomonic roentgen sign of retroperitoneal abscess; report of two cases of ruptured appendix with positive roentgen findings.
mesh_terms: D018784:Abdominal Abscess; D000038:Abscess; D001064:Appendicitis / Q000175:diagnosis*; D001065:Appendix; D006801:Humans; D010808:Physical Examination; D012421:Rupture
keywords: ABSCESS/retroperitoneal; APPENDICITIS/diagnosis; APPENDIX/rupture