Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.
Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Obstetrics and Gynecology, Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Obstetrics and Gynecology, School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
Taiwan J Obstet Gynecol. 2020 Jan;59(1):154-156. doi: 10.1016/j.tjog.2019.11.026.
Mature cystic teratomas are mostly confined to the ovaries, but several authors have reported findings of extragonadal occurrences along the migration pathway of primordial germ cells. Extragonadal mature cystic teratomas are extremely rare; their occurrences and pathogenesis are unknown.
We report the case of a 26-year-old woman who was admitted for scheduled laparoscopic right ovarian tumor excision. An anterior uterine wall mature cystic teratoma and a pararectal corpus luteum cyst were found intraoperatively with coexistence of left adnexal agenesis.
The existence of an extragonadal mature cystic teratoma over the anterior uterine serosal layer may be caused by autoamputation and reimplantation as a result of ovarian torsion or displacement of primordial germ cells along their migration path. The existence of an ovarian mass over the sigmoid colon combined with left adnexal agenesis may be the result of ovarian torsion with remnant tissue attached to the sigmoid colon.
成熟囊性畸胎瘤主要局限于卵巢，但已有数名作者报道了沿原始生殖细胞迁移途径发生的卵巢外发生的发现。卵巢外成熟囊性畸胎瘤极为罕见；其发生和发病机制尚不清楚。
我们报告了一例 26 岁女性的病例，该患者因计划行腹腔镜右侧卵巢肿瘤切除术入院。术中发现子宫前壁有一个成熟囊性畸胎瘤和一个附件旁黄体囊肿，同时存在左侧附件缺如。
子宫前壁浆膜层上存在卵巢外成熟囊性畸胎瘤，可能是由于卵巢扭转或原始生殖细胞沿其迁移路径发生移位导致的自体截断和再植入所致。乙状结肠上存在卵巢肿块并伴有左侧附件缺如，可能是卵巢扭转的结果，残留组织附着在乙状结肠上。
