title: Unusual elevation of CEA in a patient with history of colon cancer.
abstract: A 35-year-old female received right hemicolectomy for a poorly differentiated adenocarcinoma of the ascending colon with lymph node metastasis (1/28) in February 1997. CEA was 1.68 ng/microl prior to colectomy. Adjuvant chemotherapy with weekly 5-FU and leucovorin intravenously was started following surgery and discontinued after 17 doses in May 1997. She received bilateral salpingo-ophorecctomy for metastatic cancer in August 1999. Intravenous chemotherapy was resumed with weekly 5-FU and leucovorin intravenously in August 1999. CEA was 93.8 ng/microl in November 1999. Intravenous chemotherapy was discontinued after 20 doses and oral chemotherapy with futraful and leucovorin was started in January 2000. CEA was found to be 240.3 ng/microl in December 1999 and then elevated to 1521.3 ng/microl in June 2001, which was 10 months after resection of metastatic ovarian cancer. No metastatic lesions could be detected, however, with image studies. The CEA decreased to 396.6 ng/microl three months later. Futraful was switched to uracil-tegafur (UFUR) in September 2001. The CEA for the patient ranged from 68.5 to 298.9 ng/microl for the following 5 years without aggressive chemotherapy. No evidence of recurrence could be demonstrated by imaging studies. The patient is not a smoker and denied exposure to a smoking environment. She was also not known to have persistent infections, inflammatory bowel disease, pancreatitis, cirrhosis of the liver, or any benign tumors. The current case suggested that: (i) elevation of CEA is not necessarily well correlated with presence of metastatic colon cancer; (ii) some patients may live with elevated CEA for years without evidence of recurrence or metastasis; (iii) aggressive chemotherapy may not be necessary in patients with only elevated CEA.
authors.affiliation: Department of Surgery, Taipei Mackay Memorial Hospital, Taipei Medical University, Taipei, Taiwan. tzuchi@ms2.mmh.org.tw
authors.forename: Tzu-Chi
authors.initials: TC
authors.lastname: Hsu
mesh_terms: D000328:Adult; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D002272:Carcinoembryonic Antigen / Q000097:blood*; D003110:Colonic Neoplasms / Q000097:blood* / Q000628:therapy; D005260:Female; D006801:Humans; D011379:Prognosis; D015854:Up-Regulation
chemical_list: D002272:Carcinoembryonic Antigen