Kobayashi R H, Moore T C
J Pediatr Surg. 1978 Aug;13(4):419-22. doi: 10.1016/s0022-3468(78)80468-0.
The ovary is second only to the sacroccygeal area as the commonest anatomic site for the occurrence of teratomas (including dermoid cysts) in infancy and childhood. While virtually all sacrococcygeal teratomas are present at birth or appear within the first 24 mo of life, ovarian teratomas are quite rare within the first 24 mo of life and seldom appear before 6 yr of age. Teratomas comprise half the surgically significant lesions of the ovary in infancy and childhood and carry a mean malignancy incidence of approximately 14% in this age group. Seven cases of ovarian teratoma in the first 2 yr of life have been reported. All of these have been seen in the second 12 mo of life. They differ from those occurring after 2 yr of age in the lesser incidence of abdominal pain, the higher incidence of an abdominal mass and the absence of reported malignancy.
卵巢是婴幼儿及儿童期畸胎瘤（包括皮样囊肿）最常见的解剖部位，仅次于骶尾部。实际上，所有骶尾部畸胎瘤在出生时即存在或在出生后24个月内出现，而卵巢畸胎瘤在出生后24个月内相当罕见，很少在6岁前出现。畸胎瘤占婴幼儿及儿童期卵巢外科重要病变的一半，该年龄组的平均恶性发生率约为14%。已有7例出生后2年内卵巢畸胎瘤的报道。所有这些病例均在出生后第二年被发现。它们与2岁后发生的卵巢畸胎瘤不同，腹痛发生率较低，腹部肿块发生率较高，且无恶性病例报道。
