4. What is Early Esophageal Cancer? Superficial Esophageal Carcinoma Japanese Esophageal Society Esophagus 2009;6:1-25 T1a + T1b AJCC/TNM 7 th Edition Early Esophageal Carcinoma Japanese Esophageal Society Esophagus 2009;6:1-25 T1a AJCC/TNM 7th Edition
5.
6. Subclassification of Depth of Invasion by Superficial Carcinoma of the Esophagus in Surgically Resected Specimens Endoscopic Resection Specimens sm1 carcinoma: invades less than 200 microns into the submucosa Japanese Esophageal Society. Japanese Classification of Esophageal Cancer. !0 th Ed. Esophagus 2009;6:1-25
7. Relationship between Depth of Invasion and Lymph Node Metastasis in Superficial Squamous Carcinoma Takubo et al. Histopathology 2007;51:733-742
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9. Oncological Outcomes Esophagectomy for pT1 Adenocarcinoma Saha et al. Surg Endosc 2009;23:119-124 40 patients - T1b 11 patients - N1 20% of T1b - Poor differentiation 4 patients Liver 22 N0 Poor T1a Trans-thoracic Liver 8 N1 Poor T1b Trans-thoracic Nodes 6 N0 Poor T1b Trans-Hiatal Site of recurrence Time to recurrence Node status Differentiation Tumor Depth Operation