结论：幼少女卵巢肿瘤发生率随年龄的增长而升高。

Conclusion: The incidence of ovarian neoplasm in young girls increases with age.

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其中肾脏肿瘤发生率相对较高，组织学类型以肾脏间叶性肿瘤为主。

The occurrence of renal tumor was relatively high, and the histological type is mainly mesenchymal.

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结果：良性肿瘤发生率（92 1% ）高于恶性肿瘤（7 9% ）。

Results The prevalence rate of benign neoplasms(92 1%) was higher than that of malignant masses(7 9%).

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