Chromoendoscopy to Detect Early Synchronous Second Primary Esophageal Carcinoma in Patients with Squamous Cell Carcinomas of the Head and Neck?

<table>Localization of primary HNSCC in patients screened for the presence of synchronous esophageal pathology by chromoendoscopy.</table>

Gastroenterology Research and Practice

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Figure 1

Figure 1: Chromoendoscopy to Detect Early Synchronous Second Primary Esophageal Carcinoma in Patients with Squamous Cell Carcinomas of the Head and Neck? 

Figure 1 | Chromoendoscopy to Detect Early Synchronous Second Primary Esophageal Carcinoma in Patients with Squamous Cell Carcinomas of the Head and Neck? 