Abstract
The role of computed tomography in assessing tumour spread and tumour resectability was evaluated in 50 patients with oesophageal carcinoma (17 middle third, 33 lower third). CT accurately identified all patients with tumour confined to the oesophagus (Stage I or II) but was limited in its ability to assess direct organ invasion (Stage III) with an overall accuracy for evaluating middle third lesions of 82% (aorta 70%, tracheobronchial tree 94%, other mediastinal structures 82%) compared to an overall accuracy for lower third lesions of 97% (aorta 97%, pancreas 100%, diaphragm 97%). Tumours deemed resectable on CT were always resectable at operation but two of seven middle third tumours and one of twelve lower third lesions deemed unresectable underwent curative resection. Preoperative CT evaluation of oesophageal tumours is useful in that it may reliably identify tumour lesions confined to the oesophagus and reliably identify distant metastases. Because of its limitations however in the assessment of organ invasion, particularly by middle third lesions, this study suggests that patients with oesophageal tumours with no evidence of distant metastases, who are otherwise fit to undergo tumour resection, should not be denied surgery on the sole basis of positive organ invasion on CT particularly if that organ is the aorta.
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