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Table 1 Features of five groups of third/fourth branchial arch anomalies

From: Third or fourth branchial pouch sinus lesions: a case series and management algorithm

 IIIIIIIVV
Cases (67 cases) [n (%)]25 (37.3%)16 (23.9%)18 (26.9%)1 (1.5%)7 (10.4%)
Demographic
 Female [n (%)]16 (64.0%)9 (56.3%)8 (44.4%)1 (100.0%)6 (85.7%)
 Age [median (range)]9y(1y-47y)8y(1y-35y)11.5y(1y-39y)16y(16y)21y(7y-42y)
Site of presentation (n [%])
 Left22 (88.0%)14 (87.5%)8 (44.4%)0 (0.0%)2 (28.6%)
 Right0 (0.0%)1 (6.3%)7 (38.9%)1 (100.0%)5 (71.4%)
 Bilateral3 (12.0%)1 (6.3%)3 (16.7%)0 (0%)0 (0%)
Initial presentation (n [%])
 Recurrent low-neck abscess24 (96.0%)14 (87.5%)2 (11.1%)1 (100%)1 (14.3%)
 Acute suppurative thyroiditis16 (64.0%)4 (25.0%)0 (0.0%)0 (0.0%)0 (0.0%)
 Neck mass1 (4.0%)2 (12.5%)7 (38.9%)0 (0.0%)6 (85.7%)
 Cutaneous discharging fistula with neck infection11 (44.0%)4 (25.1%)9 (50.0%)0 (0.0%)2 (28.6%)
Diagnostic investigations performed (n [%])
 Iopromide swallow (41 cases)15 (60.0%)6 (87.5%)///
 Laryngoscopy (41 cases)21 (84.0%)10 (62.5%)///
 CT scan (51 cases)22 (88.0%)14 (87.5%)8 (44.4%)1 (100.0%)4 (57.1%)
 Ultrasound (31 cases)13 (92.9%)9 (90.0%)4 (100.0%)1 (100.0%)2 (100.0%)
 MRI (13 cases)3 (100.0%)4 (100.0%)1 (50.0%)1 (100.0%)3 (100.0%)
Treatment (n [%])
 Incision and drainage22 (88.0%)7 (43.8%)6 (33.3%)1 (100.0%)1 (14.3%)
 Open neck surgery after failure10 (40.0%)0 (0.0%)1 (5.6%)0 (0.0%)0 (0.0%)
 None3 (12.0%)9 (56.2%)9 (61.1%)0 (0.0%)6 (85.7%)
Operating method (n [%])
 Type I//18 (100.0%)1 (100.0%)7 (100.0%)
 Type II/10 (62.5%)///
 Type III16 (64.0%)5 (31.3%)///
 Type IV9 (36.0%)1 (6.3%)///
Complication (n [%])
 Wound infection0 (0%)2 (12.5%)0 (0%)0 (0%)0 (0%)
 Esophageal injury0 (0%)0 (0%)0 (0%)0 (0%)0 (0%)
 Voice hoarseness0 (0%)0 (0%)0 (0%)0 (0%)0 (0%)
 Recurrence (n [%])0 (0%)1 (6.25%)0 (0%)0 (0%)0 (0%)
  1. Group I: Fistulas; Group II: Inner sinus; Group III:Outer sinus; Group IV:Outer sinus with cysts; Group V:Isolated cysts