PDF(Pubmed)
Abstract：
A palpable rectal mass associated with gastrointestinal (GI) symptoms immediately raises concern for colorectal cancer, but rarely can represent distant metastatic disease. The incidence of symptomatic colorectal metastasis from a primary lung cancer without any pulmonary symptom is extremely rare. We report a rare case of constipation as the presenting symptom in a patient ultimately found to have metastatic squamous cell carcinoma of the lung. A rectal mass was readily palpable on examination, illustrating the importance of digital rectal examination. In addition, GI clinicians should maintain a high index of suspicion when evaluating patients at risk of non-GI malignancies.
摘要：
与胃肠道（GI）症状相关的明显直肠肿块立即引起对结直肠癌的关注，但很少能代表远处转移性疾病。来自没有任何肺部症状的原发性肺癌的症状性结直肠转移的发生率极为罕见。我们报告了一例罕见的便秘病例，该患者最终发现患有转移性肺鳞状细胞癌。直肠肿块在检查中很容易触及，说明直肠指检的重要性。此外,在评估非胃肠道恶性肿瘤风险的患者时，胃肠道临床医生应保持较高的怀疑指数。
