CT诊断小儿腹腔型隐睾肿瘤

目的 探讨MSCT诊断小儿腹腔隐睾肿瘤的价值。方法 回顾性分析手术病理证实的8例小儿腹腔隐睾肿瘤的MSCT表现。结果 8例小儿腹腔隐睾肿瘤6例位于右侧、2例（1例左侧隐睾肿瘤扭转至右侧腹腔）位于左侧。8例均表现为腹腔卵圆形软组织肿块，其中3例肿瘤长轴与睾丸下行途径一致。6例畸胎瘤表现为囊实性肿物，其内可见脂肪、钙化（骨化）；2例卵黄囊瘤表现为巨大囊实性肿块，其内见不规则液性坏死，可见丰富肿瘤血管。结论 与成人不同，小儿腹腔隐睾肿瘤多为畸胎瘤或卵黄囊瘤，其MSCT表现具有一定的特征，结合病史可做出定性诊断。

MSCT diagnosis of tumors of intra-abdominal cryptorchidism in children

Objective To explore the diagnostic value of MSCT in tumors of intra-abdominal cryptorchidism in children. Methods MSCT findings of 8 children with tumors of intra-abdominal cryptorchidism confirmed by surgery and pathology were analyzed retrospectively. Results Six tumors located in the right, 2 (1 tumor of left cryptorchidism turned to the right abdominal) in the left. Eight children showed ovoid soft tissue tumor in abdomen. Three children displayed the long axis of the tumors consistent with regular descending course of embryonic testes. Six teratomas manifested as the cystic and solid mass with fat, calcification (ossification) insidey. Two yolk sac tumors manifested as the large cystic and solid mass with irregular necrosis and abundant tumor vessels. Conclusion The pathologic types of tumors for intra-abdominal cryptorchidism in children are different from adult. Most of them are teratomas or yolk sac tumors, and have some characteristics in MSCT. MSCT is helpful in diagnosis of tumor for intra-abdominal cryptorchidism with medical history.