| Theme | Early Esophageal cancer-from the Viewpoint of its Type and the Depth of Invasion | |
|---|---|---|
| Title | Endoscopic Diagnosis of The Depth of Invasion and Classification of Early Esophageal Cancer | |
| Publish Date | 1997/11 | |
| Author | Akimichi Chonan | Department of Gastroenterology, JR Sendai Hospital |
| Author | Fukuji Mochizuki | Department of Gastroenterology, JR Sendai Hospital |
| [ Summary ] | To estimate the depth of early esophageal cancer invasion, 74 patients with early esophageal cancer were examined endoscopically. Macroscopic type correlated with the depth of cancer invasion. Patients with 0-I (superficial and protruding) type and 0-III (superficial and distinctly depressed) type were classified as having submucosal cancer, while in those with 0-IIa type lesions (i.e., slightly elevated subtype of superficial and flat type lesions), the depth of invasion was m1-m3. All patients with 0-IIb type lesions (i.e., flat subtype of superficial and flat type lesions) were classified as having m1 cancer. In patients with 0-IIc type lesions (i.e., slightly depressed subtype of superficial and flat type lesions), it was difficult to diagnose the depth of invasion, because there was a wide distribution from m1 to sm3. Endoscopic diagnostic efficacy, with regards to the depth of cancer invasion, was evaluated. The depth of invasion was accurately diagnosed by endoscopy in 91% of the patients with m1-m2 cancer and in 83% of the patients with sm2-sm3 cancer. On the other hand, the accuracy rate in diagnosing the depth of invasion was only 37% in patients with m3-sm1 cancer. Our results suggest the necessity of total diagnosis employing not only conventional endoscopy but also endoscopic staining, roentogenography and endoscopic ultrasonography etc. |
|