Late-Onset Lung Metastasis in Rectum Cancer Can Be Confused with Primary Lung Cancer; a Case Report and Literature Review
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About 20 to 50% of patients who undergo curative resection for colorectal cancer and receive adjuvant treatment will eventually develop metastases. Early studies reported that the liver, lungs, peritoneum, and bones are the main metastatic sites of rectal cancer [1, 2]. Recently published studies have reported that lungs are the leading site for metastases from rectal cancer [3, 4, 5, 6]. Although most recurrences occur within the first 5 years after the initial treatment in patients with rectal cancer, occasional recurrences may occur after 5 years from the time of initial treatment [7, 8]. Most studies have researched recurrences within 5 years after surgery; however, there are few studies that have researched recurrences within 10 years [9, 10]. Therefore, there is no consensus on optimum follow-up duration.
Herein, we report a patient who presented with a primary mass lesion in the lung 10 years after the surgery for rectal cancer.
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Conflict of Interest
The authors declare that they have no conflict of interest.
Informed consent was obtained from all individual participants included in the study.
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