BACKGROUND: We analyzed perioperative platelet counts as a potential clinical marker for survival after transthoracic en bloc resection for esophageal cancer. Recent data described preoperative thrombocytosis in malignancies to be associated with poor prognosis. METHODS: A retrospective analysis from a prospective database (1997-2006) was performed for 291 consecutive patients with esophageal cancer who underwent transthoracic en bloc esophagectomy and extended lymphadenectomy. Squamous cell cancer was found in 47.0% and adenocarcinoma in 50.9% (2.1% had rare histologies). Neoadjuvant chemoradiation was performed in 152 (52%) patients. Platelet counts before surgery and on postoperative days (PODs) 1, 10, and 30 were evaluated. We used the published cutoff value of 293 × 10(9)/l (mean of 80 healthy controls ± standard deviation) for platelet counts. RESULTS: High platelet counts before surgery missed significance for poorer survival (p = 0.054). Following a perioperative fall in thrombocytes, a significant rise at POD 10 after surgery was evident. Platelet counts of more than 293 × 10(9)/l at this time correlated with a significantly improved survival rate (p = 0.027). Patients with no increase in thrombocytes until POD 10 had significantly poorer survival (p = 0.012). Multivariate analysis confirmed that a thrombocyte increase between the preoperative count and that on POD 10 is an independent prognostic indicator (p = 0.035) for patients with completely (R0) resected tumors. CONCLUSIONS: An increase in platelet counts measured on POD 10 following transthoracic en bloc esophagectomy and extended lymphadenectomy is an independent prognostic indicator for improved survival in patients with esophageal cancer.
BACKGROUND: We analyzed perioperative platelet counts as a potential clinical marker for survival after transthoracic en bloc resection for esophageal cancer. Recent data described preoperative thrombocytosis in malignancies to be associated with poor prognosis. METHODS: A retrospective analysis from a prospective database (1997-2006) was performed for 291 consecutive patients with esophageal cancer who underwent transthoracic en bloc esophagectomy and extended lymphadenectomy. Squamous cell cancer was found in 47.0% and adenocarcinoma in 50.9% (2.1% had rare histologies). Neoadjuvant chemoradiation was performed in 152 (52%) patients. Platelet counts before surgery and on postoperative days (PODs) 1, 10, and 30 were evaluated. We used the published cutoff value of 293 × 10(9)/l (mean of 80 healthy controls ± standard deviation) for platelet counts. RESULTS: High platelet counts before surgery missed significance for poorer survival (p = 0.054). Following a perioperative fall in thrombocytes, a significant rise at POD 10 after surgery was evident. Platelet counts of more than 293 × 10(9)/l at this time correlated with a significantly improved survival rate (p = 0.027). Patients with no increase in thrombocytes until POD 10 had significantly poorer survival (p = 0.012). Multivariate analysis confirmed that a thrombocyte increase between the preoperative count and that on POD 10 is an independent prognostic indicator (p = 0.035) for patients with completely (R0) resected tumors. CONCLUSIONS: An increase in platelet counts measured on POD 10 following transthoracic en bloc esophagectomy and extended lymphadenectomy is an independent prognostic indicator for improved survival in patients with esophageal cancer.
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