PDF(Pubmed)
Abstract：
A 66-year-old man presented to our institution with a positive fecal occult blood test and lower abdominal pain. Although a tumor was found in the sigmoid colon, biopsy and imaging studies failed to enable the diagnosis of the cancer, and the patient underwent surgery for treatment and diagnosis. The tumor had two distinct areas with differing features shown both histopathologically and on imaging; it was thus diagnosed as a leiomyosarcoma of the sigmoid colon with a pleomorphic component. Here, we describe a rare case of leiomyosarcoma of the sigmoid colon with a pleomorphic component. There are no reports of leiomyosarcoma with pleomorphic components arising in the colon in the literature; thus, the recurrence and metastatic characteristics are unknown. Therefore, accumulating cases in the literature may provide valuable insights into diagnosing and treating these rare tumors.
摘要：
一名66岁的男子出现在我们的机构，粪便潜血检查呈阳性，下腹痛。尽管在乙状结肠发现了肿瘤，活检和影像学检查未能诊断癌症，患者接受了手术治疗和诊断。肿瘤有两个不同的区域，在组织病理学和影像学上都显示出不同的特征；因此，它被诊断为乙状结肠平滑肌肉瘤，具有多形性成分。这里,我们描述了一个罕见的乙状结肠平滑肌肉瘤，具有多形性成分。文献中没有关于结肠中出现多形性成分的平滑肌肉瘤的报道；因此，复发和转移特征未知.因此,文献中积累的病例可能为诊断和治疗这些罕见肿瘤提供有价值的见解。
