Sinha Ruchi, Kumari Madhu, Sinha Ranwir Kumar, Kumar Bindey
Department of Pathology, AIIMS, Patna, India.
Department of Paediatric Surgery, AIIMS, Patna, India.
Case Rep Pathol. 2020 Jan 20;2020:6495321. doi: 10.1155/2020/6495321. eCollection 2020.
Teratomas are nonseminomatous germ cell tumors composed of elements derived from more than one germinal layers (endoderm, mesoderm, and ectoderm). Malignant transformation of teratoma in the testis is well known; however, benign somatic neoplasm arising in a testicular teratoma is a rare occurrence. We report a case of meningothelial variant of meningioma arising in a pure and mature teratoma of the testis in a 5-year-old boy. Immunohistochemistry was positive for epithelial membrane antigen and vimentin. To our knowledge, this is the first report of meningothelial meningioma in a prepubertal testicular teratoma.
畸胎瘤是由来自一个以上胚层（内胚层、中胚层和外胚层）的成分组成的非精原性生殖细胞肿瘤。睾丸畸胎瘤的恶性转化是众所周知的；然而，睾丸畸胎瘤中出现的良性体细胞肿瘤却很少见。我们报告一例5岁男孩睾丸纯成熟畸胎瘤中发生的脑膜上皮型脑膜瘤。免疫组化显示上皮膜抗原和波形蛋白呈阳性。据我们所知，这是青春期前睾丸畸胎瘤中脑膜上皮型脑膜瘤的首例报告。
