Computed Tomography(CT) was found to be highly accurated in predicting tumor size and assessing invasion of the surrounding structures and distant metastasis. Aloso CT played an important role for determination of operability of esophageal carcinoma. The CT findings with barium esophagogram in 21 patients with histologically proven esophageal carcinoma were reviewed from Feb. 1985 to Feb. 1986 at the department of Radiology, Yonsei University, College of Medicine. The results were as follows : 1. Number of patients in each stages were : 2 in stage 1, 6 in stage2, 4 in stage 3, and 9 in stage 4. 2. Peak age distribution was in its 6th decades as 9 patients(42.9%). Overall mean age was 60.8 years. Number of male patients were 19 and 2 of female. 3. Histologic types of esophageal carcinoma were 19 cases of epidermoid(90.5%), and 2 cases of adenocarcinoma(9.5%). 4. The tumor location was 1 cases in upper, 14 cases(66.7%) in middle and 6 cases in lower one-third. 5. Various types of esophageal carcinoma were as follows : 3 cases of fungating, 4 cases of infiltrating, 5 cases of ulcerofungating ,and 9 cases of ulceroinfiltrating type. 6. Average length of involvement in each stages were 4 cm in stage 1, 5.5cm in stage 2, 8.8cm in stage 3, and 8,3 cm in stage 4. The involved length was longer in advanced cases. In 11 cases(52.4%) the involved length was between 4 and 8 cm. 7. Angle of periaortic fat plane obliteration of the aortic circumference were as follows : Below 45。(7 cases 33.3%), 45$^{circ}$-90$^{circ}$(3 cases 14.3%), over 90$^{circ}$(11 cases, 52.4%) 8. Method of treatment of esophageal carcinoma were as follows : Only radiotherapy in 11 cases (52.4%), radiotherapy with operation in 5 cases, only operation in 1 cases, and no treament in 4 cases. 9. Distant metastatic sites were : brain in 1, percicardium in 5, trachea in 2 , bronchus in 9 and distant lymph node in 5 cases.