Progress in CT and MRI Examination for Esophageal Cancer.

概要

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Accurate diagnosis of tumor extension in cases of esophageal cancer is very important to establish an adequate therapeutic strategy. The main purpose of examination (s) using CT and/or MRI is to determine the staging of the esophageal cancer. These examinations are also necessary in the evaluation of some therapeutic effects and in follow-up studies.Tumor invasion into adjacent organs can be diagnosed by certain anatomical abnormalities. Recently, neoadjuvant therapy or non-surgical treatment has often been selected for patients with locally far-advanced cancer. Therefore, the accuracy rate of diagnoses using CT and/or MRI is unclear. The accuracy rate of direct observation of tumor invasion of adjacent organs in our department is 70-90%.Although the size, figure, and location of the lymph nodes are referred for diagnosing nodal involvement, the diagnostic accuracy for nodal metastasis is only about 65%, which is unsatisfactory. From the practical point of view, we should suspect all lymph nodes detected by CT and/or MRI as having metastasis.The hardware for CTs and MRIs is rapidly developing. Three-demensional reconstruction and virtual endoscopy have become common in clinical use. We should make more clinical applications of advanced technology in CTs and MRIs to establish more reliable pre-treatment diagnosis in the staging of esophageal cancer.
特定非営利活動法人日本気管食道科学会の論文