本组中，起源于眼眶和肾脏的最多，且以视网膜母细胞瘤、肾母细胞瘤最多见，与上海、山东相比，肾母细胞瘤、肝癌及恶性畸胎瘤发病率较高，而脑瘤相对少见。

The most common origins are the orbit and the kidneys and the predominant tumors are retinoblastoma and nephroblastoma respectively. In contrast to those found in Shanghai and Shandong, the inciden…

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