| Theme |
Clinical Application of Sentinel Node Concept for Carcinoma of the Alimentary Tract |
| Title |
RI Method for Sentinel Lymph Node Detection |
| Author |
Yu Takagi |
Third Department of Surgery, Tokyo Medical University |
| Author |
Sumito Hoshino |
Third Department of Surgery, Tokyo Medical University |
| Author |
So Katayanagi |
Third Department of Surgery, Tokyo Medical University |
| Author |
Hideo Sudo |
Third Department of Surgery, Tokyo Medical University |
| Author |
Yoshiaki Osaka |
Third Department of Surgery, Tokyo Medical University |
| Author |
Motoo Shinohara |
Third Department of Surgery, Tokyo Medical University |
| Author |
Mana Yoshimura |
Radiology, Tokyo Medical University |
| Author |
Akihiko Tsuchida |
Third Department of Surgery, Tokyo Medical University |
| Author |
Tatsuya Aoki |
Third Department of Surgery, Tokyo Medical University |
| [ Summary ] |
99mTc, which has short half-life of six hours, is safely used for the detection of sentinel lymph node (SN) with the radioisotope (RI) method. However, it must be used in an isolated RI room. 99mTc-tin colloid or 99mTc-phytate are used as tracers. Technically, a collimetor and accurate aiming of gamma probes are required because of strong a "shine-through" phenomenon in the main lesion. Concerning diagnostic criteria, SN radioactivity is considered to be 10 times that of background levels. Lymphatic scintigraphy is useful for esophageal cancer treatment, but it is not frequently performed for gastric cancer. SN detection in the gastrointestinal region should be performed with an understanding of the characteristics and safety measures necessary for RI. |