"type A: single caecum with one normally localised appendix exhibiting partial duplication"
"type B: single caecum with two completely separate appendices and divided into two further subgroups"
"type B1 (‘bird-like type’): two appendices located symmetrically on either side of the ileocaecal valve, resembling the normal arrangement in birds"
"type B2 (‘taenia coli’ type): one appendix arises from the caecum at the usual site, and the second branches at varying distances along the lines of the taenia from the first"
"type C: double caecum, each bearing its own appendix"
Expected headings
"Associations"
"When anomalies of the appendix are detected in childhood they are nearly always associated with severe intestinal, genitourinary or bony malformations, seen most often in conjunction with type B1 and C duplications."