[Two cases of rectal neuroendocrine carcinoma associated with long-standing ulcerative colitis].

Two cases of neuroendocrine carcinoma, complicated with ulcerative colitis, were examined. Case 1:The patient developed ulcerative colitis at the age of 38, surgery was performed after a diagnosis of rectal cancer at the age of 53, and the patient was diagnosed with neuroendocrine carcinoma by pathological examination after resection. Post-surgery, metastatic nodules were detected in the liver and lungs. The patient is undergoing chemotherapy at this time. Case 2:The patient developed ulcerative colitis at the age of 59;at 72, a sigmoid colon tumor, in addition to multiple liver tumors, was detected. The patient was diagnosed with neuroendocrine carcinoma following biopsy. Chemotherapy was initiated;however, the patient died of cancer 12 months later.