In 11 boys, 3 of whom had bilateral and 8 unilateral impalpable testes, ultrasonography was used to identify the location of the testes. The results of ultrasonography are compared with those of laparoscopy in the same patients. The testes were absent in two instances. The remaining 12 testes were accurately located by laparoscopy. Ultrasonography demonstrated the testes in only two cases.
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Malone et al. (1985) studied this question.
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