[identity profile] halfshellvenus.livejournal.com 2010-05-19 11:17 pm (UTC)(link)
Ages ago, someone (I think you!) posted a frontal picture that had a mid-section scar detouring around the bellybutton, and there was a lot of speculation as to what the scar was for!

My husband has the same scar, from exploratory surgery that eventually discovered a swollen appendix. In his case, it's the only scar he has because the appendix was mis-located and was actually in the middle of the abdomen. In Chad's case, he also has what looks like a traditional appendix scar. So I'm guessing they went in experimentally, and then, "D'OH!"