Twenty-nine patients with unilateral or bilateral cryptorchism underwent biopsies of the testis at the time of orchiopexy. Karyotype evaluation of fibroblasts obtained from tissue cultures of the biopsy specimen was completed counting a minimum of twenty-five cells. In 1 patient with multiple anomalies a 46,XY,Dq+ karyotype was identified. All other karyotypes were normal suggesting cryptorchism is not associated with abnormal testicular cytogenetics.
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