Abstract
The case is reported of a 6-year-old boy with gonadal dysgenesis and a male nuclear pattern (oral smear), who underwent exploratory laparotomy. The internal genitalia on the left consisted of a Fallopian tube and a poorly differentiated gonad. On the right the gonad resembled a prepubertal testis, with an epididymis and spermatic cord, but exhibited areas of dysgenesis; there were intratubular bodies in some of the seminiferous tubules. The anatomic abnormalities associated with gonadal dysgenesis are not predictable, and can be established only by exploratory laparotomy.