Kim Y W, Park Y K, Oh S M, Yang M H
Department of Pathology, School of Medicine, Kyung Hee University, Seoul, Korea.
J Korean Med Sci. 1990 Dec;5(4):237-42. doi: 10.3346/jkms.1990.5.4.237.
The morphological features of a retroperitoneal teratoma in a 10-month-old girl are reported. Unlike the usual pattern of the teratoma, this tumor was composed predominantly of nephroblastomatous tissue. Histologically, glomeruloid and tubular structures were identified in nests of undifferentiated blastemal elements. Hyaline cartilage, adipose tissue, glial tissue and glands lined by mucin-secreting columnar epithelium were minor elements. A focal cystic structure lined by thin flattened epithelium was also noted. Retroperitoneal teratoma with predominance of nephroblastic elements is of interest not only because of its rarity but also because it needs to be differentiated from extrarenal Wilms' tumor, since both of these tumors have different origins.
报告了一名10个月大女孩腹膜后畸胎瘤的形态学特征。与畸胎瘤的常见模式不同，该肿瘤主要由肾母细胞瘤组织构成。组织学上，在未分化的胚基细胞巢中发现了肾小球样和管状结构。透明软骨、脂肪组织、神经胶质组织以及由分泌粘蛋白的柱状上皮细胞衬覆的腺体是次要成分。还注意到一个由薄扁平上皮细胞衬覆的局灶性囊性结构。以肾母细胞成分占优势的腹膜后畸胎瘤不仅因其罕见而受到关注，还因为它需要与肾外威尔姆斯瘤相鉴别，因为这两种肿瘤起源不同。
