Takaoki Furukawa1, Yoichi Hamai2, Jun Hihara1, Manabu Emi1, Ichiko Yamakita1, Yuta Ibuki1, Morihito Okada1. 1. Department of Surgical Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan. 2. Department of Surgical Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan. yyhamai@hotmail.com.
Abstract
PURPOSE: To determine the preoperative ability of [18F]-fluoro-2-deoxyglucose positron emission tomography (FDG-PET) to predict pathologic tumor invasion and lymph node status in cT1N0M0 esophageal squamous cell carcinoma (ESCC). METHODS: We retrospectively analyzed 40 consecutive patients diagnosed with cT1N0M0 ESCC between February 2006 and April 2011. All patients were treated by esophagectomy with two- or three-field lymphadenectomy without neoadjuvant therapy. We evaluated the relevance between clinical variables including maximum standardized uptake values (SUVmax) of the primary tumor on FDG-PET and pathologic tumor invasion and lymph node status using a logistic regression model. RESULTS: Tumors invaded the middle submucosal layer (SM2) and beyond in 21 (52.5 %) patients, and 6 (15 %) had lymph node metastases. The areas under receiver operating characteristic (ROC) curves for SUVmax of the primary tumor used to predict factors involved in tumor infiltration to SM2 or deeper and lymph node metastasis were 0.75 (p = 0.006) and 0.79 (p = 0.025), respectively. The optimal SUVmax cutoff was 2.7. The findings of univariate and multivariate analyses identified SUVmax as the only significant preoperative predictor associated with tumor infiltration into SM2 or beyond and lymph node metastasis. Furthermore, SUVmax ≥ 2.7 of the primary tumor on FDG-PET was associated with poor recurrence-free and disease-specific survival (p = 0.019 and p = 0.012, respectively). CONCLUSIONS: FDG-PET is helpful for diagnosing tumors that can infiltrate SM2 and beyond as well as occult lymph node metastasis of cT1N0M0 ESCC that are valuable indications in deciding therapeutic strategies for superficial ESCC.
PURPOSE: To determine the preoperative ability of [18F]-fluoro-2-deoxyglucose positron emission tomography (FDG-PET) to predict pathologic tumor invasion and lymph node status in cT1N0M0 esophageal squamous cell carcinoma (ESCC). METHODS: We retrospectively analyzed 40 consecutive patients diagnosed with cT1N0M0 ESCC between February 2006 and April 2011. All patients were treated by esophagectomy with two- or three-field lymphadenectomy without neoadjuvant therapy. We evaluated the relevance between clinical variables including maximum standardized uptake values (SUVmax) of the primary tumor on FDG-PET and pathologic tumor invasion and lymph node status using a logistic regression model. RESULTS:Tumors invaded the middle submucosal layer (SM2) and beyond in 21 (52.5 %) patients, and 6 (15 %) had lymph node metastases. The areas under receiver operating characteristic (ROC) curves for SUVmax of the primary tumor used to predict factors involved in tumor infiltration to SM2 or deeper and lymph node metastasis were 0.75 (p = 0.006) and 0.79 (p = 0.025), respectively. The optimal SUVmax cutoff was 2.7. The findings of univariate and multivariate analyses identified SUVmax as the only significant preoperative predictor associated with tumor infiltration into SM2 or beyond and lymph node metastasis. Furthermore, SUVmax ≥ 2.7 of the primary tumor on FDG-PET was associated with poor recurrence-free and disease-specific survival (p = 0.019 and p = 0.012, respectively). CONCLUSIONS: FDG-PET is helpful for diagnosing tumors that can infiltrate SM2 and beyond as well as occult lymph node metastasis of cT1N0M0 ESCC that are valuable indications in deciding therapeutic strategies for superficial ESCC.
Authors: Marta Troya-Castilla; Santiago Rocha-Romero; Yamin Chocrón-González; Francisco Javier Márquez-Rivas Journal: World J Surg Oncol Date: 2016-09-01 Impact factor: 2.754