− | *Dx: '''Adenocarcinoma''' is more common in the mid to distal esophagus, while '''squamous cell carcinoma''' is found in the upper 1/3. | + | *Dx: '''Adenocarcinoma''' is more common in the distal 2/3 esophagus (smooth muscle), while '''squamous cell carcinoma''' is found in the upper 1/3 (skeletal muscle). |