Adenocarcinoma of sigmoid colon with metastasis to an ovarian mature teratoma: A case report  

作　　者：Wei Wang Chun-Chi Lin Wen-Yi Liang Shih-Ching Chang Jeng-Kai Jiang 

机构地区：[1]Division of Colorectal Surgery,Department of Surgery,Taipei Veterans General Hospital,Taipei 11217,Taiwan [2]Faculty of Medicine,School of Medicine,National Yang Ming Chiao Tung University,Taipei 112304,Taiwan [3]Department of Pathology,Taipei Veteran General Hospital,Taipei 11217,Taiwan

出　　处：《World Journal of Clinical Cases》2024年第4期853-858,共6页世界临床病例杂志

摘　　要：BACKGROUND Colorectal cancer ranks third in global cancer-related mortality,often due to metastases to liver and lungs.Ovarian metastases are less common,accounting for 3.6%to 7.4%of cases.In contrast,mature ovarian teratomas are frequently benign.Tumor-to-tumor metastasis is a rare phenomenon,with a limited number of documented cases.Three cases of mature ovarian teratomas metastasizing from different cancers have been reported.This report focuses on a case of tumor-totumor metastasis from sigmoid colon adenocarcinoma to a mature ovarian teratoma.CASE SUMMARY A 41-year-old Taiwan residents woman with no known systemic diseases presented with lower back pain,which led to imaging revealing malignant lesions in the spine,pelvis,liver,and multiple lung metastases.She was diagnosed with sigmoid colon adenocarcinoma with metastases to the liver,lung,bone,and a left ovarian teratoma.Treatment involved radiotherapy and chemotherapy,resulting in regression of the primary tumor and stable lung and liver lesions.Due to abdominal symptoms,she underwent exploratory surgery,unveiling a mature teratoma in the left ovary with signs of metastatic adenocarcinoma.CONCLUSION Consider resecting mature ovarian teratomas with concurrent colorectal adenocarcinoma to prevent tumor-to-tumor metastasis.

关 键 词：Tumor-to-tumor metastasis Colorectal cancer Ovarian teratoma Adeno carcinoma Case report 

分 类 号：R735.35[医药卫生—肿瘤]