He Yixiao, Ji Yuzhu, Xie Gang, Wang Anqun
Department of Pathology, Mianyang Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Changjia Alley, No.12, Fucheng District, Mianyang City, Sichuan Province, 621000, China.
Radiol Case Rep. 2022 May 7;17(7):2408-2415. doi: 10.1016/j.radcr.2022.03.018. eCollection 2022 Jul.
Fetus in fetu (FIF) is a rare congenital disease caused by the abnormal development of monochorionic diamniotic twins that appears as a cystic mass containing fetus-like structures mainly in the retroperitoneum of infants. The clinical manifestations of fetus in fetu vary, but they mostly present at infancy, hence, it should be differentiated from a teratoma. Here, we report a case of an infant with fetus in fetu in the retroperitoneum. Enhanced computed tomography scans and three-dimensional images showed a huge mixed-density mass on the left side of the abdominopelvic cavity with patchy distribution of fat, intact bones, and soft tissue. The child underwent fetus in fetu resection under general anaesthesia. Histopathology confirmed that the mass contained skin, muscle, intestinal mucosa, bones and cartilage, nerves, muscles, fat, and bone marrow tissue.
胎内胎是一种罕见的先天性疾病，由单绒毛膜双羊膜囊双胞胎的异常发育引起，表现为主要位于婴儿腹膜后的含有胎儿样结构的囊性肿块。胎内胎的临床表现各不相同，但大多在婴儿期出现，因此，应与畸胎瘤相鉴别。在此，我们报告一例腹膜后胎内胎婴儿病例。增强计算机断层扫描和三维图像显示，腹盆腔左侧有一个巨大的混合密度肿块，脂肪呈斑片状分布，骨骼和软组织完整。该患儿在全身麻醉下接受了胎内胎切除术。组织病理学证实，肿块包含皮肤、肌肉、肠黏膜、骨骼、软骨、神经、肌肉、脂肪和骨髓组织。
