Case Report

Anal Canal Duplication in an 11-Year-Old-Child

Table 1

Summary of all reported anal canal duplication cases in English literature.

ReferenceNo. SexLocalizationTypeSymptomsAgeAssociated anomalies

Our patient11 FPost1 tub1 mild11 yNone
Sinnya (2012) [7]11 FPost1 tub1 complication15 yDysplastic coccyx
Lippert (2012) [8]11 FPost1 cyst1 complication12 yNone
Narci (2010) [9]22 FPost2 tub2 asympt5 y
(1–9 y)
None
Koga (2010) [10]1010 FPost10 tub3 asympt
6 mild
1 complication
6 m
(24 d–4 y)
1 hypoplastic kidney
1 teratoma and thetered cord
2 anal stenosis
Carpentier (2009) [2]21 F
1 M
Post1 tub
1 cyst
1 mild
1 complication
2.5 m
(2-3 m)
1 spina bifida occulta, thetered cord, hydronefrosis
1 none
Kratz (2008) [11]11 FPost1 cyst1 complication16 yNone
Lisi (2006) [3]1211 F
1 M
Post10 tub
1 cyst
6 asympt
4 mild
2 complication
17.8 m
(0–60 m)
1 anorectal malformation
1 cleft lip, cleft palate, omphalocoele
1 presacral ependymoma
2 teratoma’s
Tiryaki (2006) [12]22 FPost2 tub1 asympt
1 mild
7 y
(7–7 y)
1 none
1 intrasacral meningocele
Choi (2003) [4]66 FPost6 tub6 asympt4.5 m
(3–9 m)
6 none
Ochiai (2002) [1]11 FPost1 combined1 mild6 yNone
Jacquier (2001) [13]66 FPost6 tub5 asympt
1 mild
2.5 m
(0 m–12 y)
1 sacral teratoma, lumbosacral meningomyelocoele
1 sacral teratoma
1 uteric duplication
1 malrotation
Ponson (2001) [14]33 FPost3 tub1 asympt
2 mild
23 m
(10 m–4 y)
3 none
Hamada (1996) [5]22 FPost2 tub1 asympt
1 mild
3.5 y
(7 m–6 y)
1 cleft lip
1 none
Tagart (1977) [15]41 F
3 M
3 right side
1 post
3 tub
1 cyst
4 complication29 y
(11 m–45 y)
None
Aaronson (1970) [16]11 FPost1 tub1 asympt3 m1 anterior sacral meningocoele, covered anus

Total group numbers5549 F
5 M
52 post
3 right side
48 tub
1 combined
6 cyst
26 asympt
18 mild
11 complication
4.6 y
(0–45 y)
20 associated anomalies
Total group percentage %89% F
11% M
94.5% post
5.5% right side
87% tub
2% combined
11% cyst
47% asympt
33% mild
20% complications
36% associated anomalies

Overview of the reported cases in English literature (first author and year of publication between brackets) with the number (No.) of reported cases, the localization (post: posterior), type of lesion (tub: tubular, cyst: cystic, both combined), presenting symptoms (asympt: asymptomatic; mild: mild symptoms (pruritus, discharge, constipation, diarrhea, and limited pain); complications (inflammation, abscedation)), age mean age and range between brackets in days (d), months (m), or years (y), and number and type of associated anomalies.