Gong Zi-Xing, Li Guo-Lei, Dong Wen-Min, Xu Zhao, Li Rui, Lv Wen-Xia, Yang Jing, Li Zhong-Xin, Xing Wei
Department of General Surgery, Hebei Provincial Hospital of Chinese Medicine, Shijiazhuang 050011, Hebei Province, China.
Department of Medical Imaging, Hebei Provincial Hospital of Chinese Medicine, Shijiazhuang 050011, Hebei Province, China.
World J Clin Cases. 2024 May 16;12(14):2412-2419. doi: 10.12998/wjcc.v12.i14.2412.
Rectal mucinous adenocarcinoma (MAC) is a rare pathological type of rectal cancer with unique pathological features and a poor prognosis. It is difficult to diagnose and treat early because of the lack of specific manifestations in some aspects of the disease. The common metastatic organs of rectal cancer are the liver and lung; however, rectal carcinoma with metastasis to subcutaneous soft tissue is a rare finding.
In this report, the clinical data, diagnosis and treatment process, and postoperative pathological features of a patient with left waist subcutaneous soft tissue masses were retrospectively analyzed. The patient underwent surgical treatment after admission and recovered well after surgery. The final pathological diagnosis was rectal MAC with left waist subcutaneous soft tissue metastasis.
Subcutaneous soft tissue metastasis of rectal MAC is rare, and it can suggest that the tumor is disseminated, and it can appear even earlier than the primary malignant tumor, which is occult and leads to a missed diagnosis and misdiagnosis clinically. When a subcutaneous soft tissue mass of unknown origin appears in a patient with rectal cancer, a malignant tumor should be considered.
直肠黏液腺癌（MAC）是一种罕见的直肠癌病理类型，具有独特的病理特征且预后较差。由于该疾病在某些方面缺乏特异性表现，早期诊断和治疗较为困难。直肠癌常见的转移器官是肝脏和肺；然而，直肠癌转移至皮下软组织的情况较为罕见。
在本报告中，对一名左腰部皮下软组织肿块患者的临床资料、诊断和治疗过程以及术后病理特征进行了回顾性分析。患者入院后接受了手术治疗，术后恢复良好。最终病理诊断为直肠MAC伴左腰部皮下软组织转移。
直肠MAC的皮下软组织转移罕见，提示肿瘤已播散，且可能比隐匿的原发性恶性肿瘤出现更早，临床上易导致漏诊和误诊。当直肠癌患者出现不明来源的皮下软组织肿块时，应考虑恶性肿瘤的可能。
