| foreign-body appendicitis | Appendicitis caused by obstruction of the lumen of the appendix by a foreign substance, such as a particulate foreign body. (05 Mar 2000) |
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| left-sided appendicitis | Appendicitis occurring on the left side of the abdomen, usually the left-lower quadrant, due to abnormal rotation of the gut (such as situs inversus). (05 Mar 2000) |
| lumbar appendicitis | A retrodisplaced appendix in the lumbar region. (05 Mar 2000) |