Table I.

Demographic characteristics of the 23 subjects and the morphological features of their urinary bladder.

Characteristic	n (%)a
Age (years)a	21.8±3.7
Gender
Male	18 (78.3)
Female	5 (21.7)
Denuded urothelial mucosa
Yes	13 (56.5)
No	10 (43.5)
Ulceration
Yes	10 (43.5)
No	13 (56.5)
Urothelial atypia
Yes	23 (100)
No	0
Intravascular eosinophil accumulation
Yes	22 (95.7)
No	1 (4.3)
Collagen deposition
Yes	15 (65.2)
No	8 (34.8)
Smooth muscle degeneration
Yes	7 (30.4)
No	16 (69.6)
Vessel proliferation
Yes	12 (52.2)
No	11 (47.8)
Calcification
Yes	3 (13.0)
No	20 (87.0)
Mucosal clear change
Yes	2 (8.7)
No	21 (91.3)
Inflammatory stage
Mild	2 (8.7)
Moderate	15 (65.2)
Severe	6 (26.1)

With the exception of age, which is presented as the mean ± standard deviation.