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. Author manuscript; available in PMC: 2026 Jul 12.
Published in final edited form as: Urology. 2025 Oct 16;207:233–238. doi: 10.1016/j.urology.2025.10.025

Table 2.

Functional and anatomical recurrence based on LSE classification and staging for anterior urethral strictures.

Characteristic Any
Recurrence
N (%)
Functional
N (%)
Anatomical
N (%)
LSE length
 L1 - ≤2 cm 58 (35.8) 28 (17.3) 44 (27.2)
 L2 – > 2-≤7 cm 29 (38.2) 10 (13.2) 27 (35.5)
 L3 - > 7 cm 2 (50) 2 (50) 1 (25)
LSE segment
 S1 – Bulbar 82 (38.5) 42 (19.7) 65 (30.5)
 S2 – Penile 14 (32.6) 4 (9.3) 11 (25.6)
 S3 – Pan-urethral 0 (0) 0 (0) 0 (0)
LSE etiology
 E1 – External trauma 5 (38.5) 2 (15.4) 5 (38.5)
 E2 – Idiopathic 26 (29.9) 9 (10.3) 25 (28.7)
 E3a – Internal trauma 13 (40.6) 7 (21.9) 9 (28.1)
 E3b – Recurrent stricture 29 (43.9) 17 (25.8) 20 (30.3)
 E3c – Radiation 14 (35.9) 8 (20.5) 10 (25.6)
 E4 – Infectious/Inflammatory 1 (33.3) 0 (0) 1 (33.3)
 E5 – Hypospadias repair 5 (62.5) 2 (25) 4 (50)
 E6 – Lichen sclerosus 2 (22.2) 1 (11.1) 1 (11.1)
LSE stage
 1 24 (36.9) 10 (15.4) 22 (33.8)
 2 56 (39.2) 30 (21) 42 (29.4)
 3 5 (26.3) 1 (5.3) 5 (26.3)
 4 8 (34.8) 3 (13) 5 (21.7)
 5 0 (0) 0 (0) 0 (0)