An Incidental Finding of Recurrent Colorectal Cancer in a Multiple Endocrine Tumor survivor: Case Report

Abstract

Introduction: Colorectal is third most frequently diagnosed cancer among United States adults. Majority of colorectal cancers are adenocarcinoma accounting for over 90% of colorectal cancers. The most common site for metastasis is the liver.

Case report: We present the case of a 56- year-old woman with complaints of bilateral hip pain and incidental finding of lower gastrointestinal bleeding. Patient presented 46 months status post resection of colon adenocarcinoma (T4bN0MO) and adjuvant chemotherapy. Surgical history was also significant for resection of nonfunctioning pituitary microadenoma and total thyroidectomy for papillary thyroid carcinoma 26 and 32 months respectively. Patient had no family history of cancer. Complete blood count revealed severe anemia and colonoscopy showed ulcerated sigmoid colon mass and no other lesion in other parts of the large intestine. Restaging imaging detected liver metastasis. The sigmoid mass was resected, and diagnoses was pT3N1a M1.

Conclusion: To date, this is the first case of recurrent colorectal cancer in a patient with history of endocrine tumors. Post operative follow-up testing should be tailored based on patient’s risk for recurrence.