Keyword: patent processus vaginalis, perforated appendicitis, scrotal abscess, ultrasonography
Background
Patent processus vaginalis (PPV) may change the natural history of appendicitis, one of commonly-encountered surgical conditions. Developed as an abdominal outpouching around the 12th week of gestation, processus vaginalis closes perinatally and becomes tunica vaginalis. However, it remains patent in 60% male at one year, 40% at two year and