Table 5 Histopathological findings in 2 large reviews and a third group comprising 29 individual case reports

Number of cases

56^a

28

29

 Urethral

31 (55.4)

15 (54)

[37, 44]

[6]^bX5

[7]^bX5

Total: 12/29 (41.3)

 Epidermoid

3 (5.4)

2 (7)

[29, 33, 42]

Total: 3/29 (10.3)

 Glandular

2 (3.4)

[1]^cX3

Total: 3/29 (10.3)

 Mixed

20 (35.7)

11 (39)

[7, 15, 20, 34, 40, 45, 59,60,61]

[18]^dX2

Total: 11/29 (37.9)

 Ciliated

–

–

[16, 30, 31, 47, 56,57,58, 62] + our patient

 Pigmented

–

–

[10, 46, 50]