[en] In order to obtain preoperative data on the regional lymph nodes in 21 cases of esophageal or cardiac cancer, lymphoscintigraphy was performed by the sophageal submucosal injection of technetium 99m-renium colloid. Of 289 surgically resected lymph nodes, 68 were visualized on scintigrams, and 17 (25%) of them showed metastasis. Nine (4.1%) of 221 non-visualized lesions showed metastasis. In cases in which RI was also administrable to the anal side of tumor, intraperitoneal lymphnodes were visualized. The method proved effective for the preoperative prediction of possible lymphnode metastases. (Chiba, N.)

[en] Lymphoscintigraphy with 99m Tc-labeled rhenium sulfur colloid was performed preoperatively in 30 patients with esopohageal cancer. It showed hot nodes in a total of 267 lymph nodes, 176 mediastinal nodes and 91 celiac artery nodes. Of these 267 nodes, 47 (18 %) were found to have metastasis, including 34 (19 %) mediastinal nodes and 13 (14 %) celiac artery nodes. On the other hand, the number of non-visualized lymph nodes (cold nodes) was 542. Of them, 78 (14 %) had metastasis; 46 (15 %) were mediastinal nodes and 32 (14 %) were celiac artery nodes. (Namekawa, K.)