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  • Title: Pre- and post-operative serum carcinoembryonic antigen in primary lung adenocarcinoma.
    Author: Nonaka M, Kataoka D, Yamamoto S, Bito A, Matsuoka J, Kawada T, Takaba T.
    Journal: Ann Thorac Cardiovasc Surg; 2004 Oct; 10(5):281-4. PubMed ID: 15563262.
    Abstract:
    The clinical value of pre- and post-operative serum carcinoembryonic antigen (CEA) concentration (mean +/- SEM, ng/ml) in surgically treated primary lung cancer patients with adenocarcinoma (n=97) was studied. Preoperative CEA in pT2 patients (18.3+/-8.0) was higher than in pT1 (10.5+/-6.4, p<0.05) but was not different from pT3 patients (19.7+/-6.7). Preoperative CEA in pN1 patients (5.9+/-1.6) was lower than in pN2 (28.2+/-13.2, p<0.05) but not different from pN0 patients (8.8+/-3.8); p-stage II patients (8.2+/-4.7) had lower values than p-stage III patients (26.7+/-10.5, p<0.05), but not p-stage I patients (7.9+/-3.9). The CEA was not different between p-stages IA and IIA (3.5+/-0.6, 6.1+/-3.2) and IB and IIB (17.0+/-11.8, 11.7+/-7.8), but was different between IA and IB (p<0.05) and IIA and IIB (p<0.05). Preoperative CEA did not differ between patients who received complete (12.7+/-4.7) versus incomplete (9.5+/-6.0) resections, nor between patients who developed recurrence after surgery (21.9+/-10.4) versus those who were disease-free (30.9+/-21.7). CEA obtained 2 months after surgery in patients who recurred or metastasized after surgery (63.1+/-47.0) was higher than in disease-free patients (4.8+/-1.6, p<0.05). The post-/pre-operative CEA ratio in patients who recurred or metastasized after surgery (146.6+/-53.3%) was also higher than in disease-free patients (91.0+/-10.9%, p=0.05). In conclusion, CEA reflected tumor size but not the tumor invasion nor hilar lymph node disease; patients with mediastinal lymph node involvement had higher CEA values. Preoperative CEA did not reflect the likelihood of complete resection nor postoperative metastasis, but postoperative CEA obtained 2 months after surgery did reflect postoperative metastasis.
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