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Nodal status is best predictor of outcome after neoadjuvant therapy for esophageal cancer

The number of lymph nodes that contain evidence of cancer is the best predictor of the effectiveness of adding chemotherapy and radiation to a treatment plan prior to surgery in individuals with oesophageal cancer, according to a study published last month in the Annals of Surgery. The authors say their finding is particularly important because the focus of recent pathological studies of response to neoadjuvant therapies has been on the primary tumour rather than nodal sites.

Multimodal neoadjuvant therapy---where suitable patients are given several cycles of drugs and radiation therapy before undergoing surgical procedures to remove their tumour---is increasingly being used by oncologists as a way to boost survival rates from oesophageal cancer which, even with the most radical surgery, remain low: only 50% of patients survive for 3 years. However, the evidence for which additional therapies work best is confusing and conflicting. What is more, although it is widely accepted that there is a group of patients in whom this approach works well, identifying who these patients are is no easy task.

To help find ways of pinpointing individuals who might respond best to neoadjuvant treatment, John Vincent Reynolds and colleagues followed the progress of 243 patients who were treated with chemotherapy and radiation before surgery over 5 years. They paid particular attention to the histomorphological responses of patients---changes in the structure and appearance of tissue samples when viewed under a microscope---in addition to assessing prognosis using the traditional TNM method of staging, which takes into account tumour size, involvement of lymph nodes (nodal status), and presence or absence of metastases.

The study group consisted of all patients undergoing neoadjuvant treatment for oesophageal cancer at St James Hospital in Dublin,Ireland. Patients with oesophageal cancer were deemed suitable for multimodal therapy if they fulfilled
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Contact: Corinne Hall
mediaservice@esoncology.org
39-028-546-4522
European School of Oncology
13-Jul-2007


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