Objective: To investigate the clinicopathological features of gonadal neoplastic related lesions in children with disorders of sexual development (DsD). Methods: The clinical manifestations, chromosomal karyotype, histology and immunophenotype of 12 cases of neoplastic related lesions from Guangzhou Women and Children's Medical Center, Guangzhou were analyzed during Jan 2015 to May 2020. Results: Twelve cases of neoplastic related lesions were screened in 205 cases of DsD, and 6 patients with gonadal germ cell neoplasia aged 3-13 years with an average age of 8.3 years. There were 2 males and 4 females. Clinical features showed malformation of external genitalia in 2 cases, short stature in 2 cases, clitoral enlargement in 1 case, lower abdominal pain and a huge pelvic mass in 1 case. Chromosomal karyotyping of peripheral blood showed 2 cases of 46XY and 4 cases of 45X/46XY. Fourteen gonadal specimens were examined. Microscopically, 1 case showed dysgerminoma in left ovary, and malignant mixed germ cell tumors in right ovary, as well as gonadoblastoma (GB) and undifferentiated gonadal tissue (UGT). The remaining 5 cases were all precursor lesions of germ cell tumor. Six specimens showed GB, 3 of UGT, and 3 specimens showed germ cell neoplasia in situ (GCNIS), one of which was accompanied by intratubular seminoma and 1 was GB with GCNIS. The other 6 patients with DsD were aged from 8 months to 2 years and 5 months, including 5 males and 1 females. Clinical manifestations showed 5 cases of hypospadias and 1 case of bilateral indirect inguinal hernia. Microscopically, 6 cases showed maturation delay of gonocytes in seminiferous tubules. Immunohistochemically, the primordial germ cells/gonocytes expressed OCT3/4, PLAP and c-KIT in the 12 cases. Conclusion: Gonadal neoplasia in children with DsD is mainly precursor lesions of germ cell tumor and improved understanding of these lesions is of great significance.
目的： 探讨儿童性发育异常（DsD）性腺肿瘤性病变的临床病理学特征。 方法： 对广州市妇女儿童医疗中心2015年1月至2020年5月确诊的12例DsD性腺肿瘤性病变患者的临床表现、染色体核型、性腺病理形态及免疫表型进行分析。 结果： 205例DsD患者中筛查出12例肿瘤相关性病变，其中6例肿瘤性病变就诊年龄3~13岁，平均8.3岁。社会性别男性2例，女性4例。临床表现，外阴异常2例，身材矮小2例，阴蒂增大1例，下腹疼痛并盆腔巨大肿块1例。染色体核型分析，2例为46XY，4例为45X/46XY。病理学检查，6例DsD肿瘤性病变送检性腺标本共14份。1例左卵巢见无性细胞瘤；右卵巢见恶性混合生殖细胞肿瘤，以及性腺母细胞瘤和未分化性腺组织。其余5例均见生殖细胞肿瘤前体病变，6份标本中见性腺母细胞瘤；3份见未分化性腺组织；3份见原位生殖细胞肿瘤（GCNIS），其中1份伴有曲细精管内精原细胞瘤；1份标本性腺母细胞瘤合并GCNIS。另外6例DsD患者年龄8个月至2岁5个月。社会性别男性5例，女性1例。临床表现，尿道下裂5例，1例双侧腹股沟斜疝。病理学检查，6例均在曲细精管内见成熟延迟的生殖母细胞。免疫组织化学染色，12例肿瘤相关性病变原始生殖细胞/生殖母细胞表达OCT3/4、胎盘碱性磷酸酶（PLAP）和C-KIT。 结论： 儿童DsD性腺肿瘤性病变以生殖细胞肿瘤前体病变为主，提高对此类病变的认识具有重要意义。.