Table 1: Classification systems for Amyand’s hernia.

TypesType 1/AType 2/BType 3/CType 4

Salient featureNormal appendix/noninflamedAcute appendicitis localized in the sac/inflamedAcute appendicitis, peritonitis/perforatedAcute appendicitis, other abdominal pathology
Surgical managementReduction or appendectomy (depending on age), mesh hernioplastyAppendectomy through hernia, endogenous repairAppendectomy through laparotomy, endogenous repairAppendectomy, diagnostic workup, and other procedures as appropriate

Types from 1 to 4 (Losanoff-Basson)
Types from A to C (Fernando and Ceulemans).