Synchronous NET and colorectal cancer development: a case report

Synchronous NET and colorectal cancer development: a case report

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Abstract Background The incidence of synchronous gastrointestinal neuroendocrine tumors (GI-NETs) and colorectal cancer is very low.Case presentation We present a 72-year-old man diagnosed with a rectal neuroendocrine tumor (NET) diamond painting strand en zee with multiple organ metastases and simultaneous sigmoid colon cancer.Although the NET was his prognostic factor, he underwent a laparoscopic sigmoidectomy at first because it was expected that the bostik roll-cote colon cancer would cause obstruction or bleeding during NET treatment.

Subsequently, he started taking everolimus.Conclusions We should consider surgical resection of the synchronous cancer before systemic therapy for a GI-NET regardless of the difference in prognosis between synchronous tumors, if the cancer may impair the continuation of systemic therapy.