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Abstract
This investigation was conducted to evaluate the presence of estrogen and androgen receptors in penile tissues of patients with hypospadias. The biopsy specimens from prepuce, glans, and urethral plate were sampled during the hypospadias surgery in five patients and were analyzed immunohistochemically. Twelve specimens were investigated for the presence of estrogen or androgen receptors (n: 24); the result was negative in 9 (37%) and positive in 15 (63%). Estrogen receptors were present in 10 specimens (42%) (prepuce: 5, glans: 3, and urethral plate: 2). Androgen receptors were present in 5 specimens (21%) (prepuce: 3, glans: 1, and urethral plate: 1). There was expression of both estrogen and androgen receptors in 5 specimens and only estrogen receptors in the remaining 5. Dominant expression of estrogen receptors in penile tissues of children with hypospadias may be the postnatal finding of disrupted estrogen and androgen receptor interaction during the intrauterine development of external genitalia.