Endoscopic landmarks corresponding to anatomical landmarks for esophageal subsite classification
Abstract Objectives Individual treatment strategies for esophageal cancer have been investigated based on the anatomical subsite classification. Accurate subsite classification based on these anatomical landmarks is thus important. We investigated the suitability of the existing endoscopic classific...
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| Language: | English |
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Wiley
2024-04-01
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| Series: | DEN Open |
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| Online Access: | https://doi.org/10.1002/deo2.273 |
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| author | Ryu Ishihara Yasuhiro Tani Yuki Okubo Yuya Asada Tomoya Ueda Daiki Kitagawa Takehiro Ninomiya Atsuko Tamashiro Shunsuke Yoshii Satoki Shichijo Takashi Kanesaka Sachiko Yamamoto Yoji Takeuchi Koji Higashino Noriya Uedo Tomoki Michida |
| author_facet | Ryu Ishihara Yasuhiro Tani Yuki Okubo Yuya Asada Tomoya Ueda Daiki Kitagawa Takehiro Ninomiya Atsuko Tamashiro Shunsuke Yoshii Satoki Shichijo Takashi Kanesaka Sachiko Yamamoto Yoji Takeuchi Koji Higashino Noriya Uedo Tomoki Michida |
| author_sort | Ryu Ishihara |
| collection | DOAJ |
| description | Abstract Objectives Individual treatment strategies for esophageal cancer have been investigated based on the anatomical subsite classification. Accurate subsite classification based on these anatomical landmarks is thus important. We investigated the suitability of the existing endoscopic classification and explored alternative landmarks for esophageal subsite classification. Methods Patients who received endoscopic ultrasonography (and computed tomography scans for surveillance of esophageal cancer treatment or esophageal submucosal tumors were included. Distances between anatomical landmarks, including the inferior cricoid cartilage border, superior border of the sternum, and tracheal bifurcation, were measured using a combination of endoscopic ultrasonography, computed tomography, and other information. Results The mean (standard deviation) distances from the superior incisor dentition to the pharynx–esophagus, cervical–upper thoracic esophagus, and upper–middle thoracic esophagus boundaries were 16.9 (1.7), 21.7 (1.9), and 29.0 (1.9) cm, respectively. However, variances in the differences between the mean and individual distances were large (2.8, 3.4, and 3.7, respectively), mainly because of differences in body height. However, variances in the differences between individual distances and novel endoscopic landmarks, including the lower end of the pyriform sinus and lower end of compression of the left main bronchus, were lower (1.7, 1.2, and 0.6, respectively). Conclusions Existing indicators of esophageal subsite boundaries were not consistent with anatomical boundaries. Modification of the distance from the superior incisor dentition based on average distances from anatomical landmarks or the use of alternative endoscopic landmarks is recommended to provide more suitable anatomical boundaries. |
| format | Article |
| id | doaj-art-b23b7f40bf89478da8f08a7e4071a54a |
| institution | Kabale University |
| issn | 2692-4609 |
| language | English |
| publishDate | 2024-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | DEN Open |
| spelling | doaj-art-b23b7f40bf89478da8f08a7e4071a54a2025-08-20T03:38:54ZengWileyDEN Open2692-46092024-04-0141n/an/a10.1002/deo2.273Endoscopic landmarks corresponding to anatomical landmarks for esophageal subsite classificationRyu Ishihara0Yasuhiro Tani1Yuki Okubo2Yuya Asada3Tomoya Ueda4Daiki Kitagawa5Takehiro Ninomiya6Atsuko Tamashiro7Shunsuke Yoshii8Satoki Shichijo9Takashi Kanesaka10Sachiko Yamamoto11Yoji Takeuchi12Koji Higashino13Noriya Uedo14Tomoki Michida15Department of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanDepartment of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapanAbstract Objectives Individual treatment strategies for esophageal cancer have been investigated based on the anatomical subsite classification. Accurate subsite classification based on these anatomical landmarks is thus important. We investigated the suitability of the existing endoscopic classification and explored alternative landmarks for esophageal subsite classification. Methods Patients who received endoscopic ultrasonography (and computed tomography scans for surveillance of esophageal cancer treatment or esophageal submucosal tumors were included. Distances between anatomical landmarks, including the inferior cricoid cartilage border, superior border of the sternum, and tracheal bifurcation, were measured using a combination of endoscopic ultrasonography, computed tomography, and other information. Results The mean (standard deviation) distances from the superior incisor dentition to the pharynx–esophagus, cervical–upper thoracic esophagus, and upper–middle thoracic esophagus boundaries were 16.9 (1.7), 21.7 (1.9), and 29.0 (1.9) cm, respectively. However, variances in the differences between the mean and individual distances were large (2.8, 3.4, and 3.7, respectively), mainly because of differences in body height. However, variances in the differences between individual distances and novel endoscopic landmarks, including the lower end of the pyriform sinus and lower end of compression of the left main bronchus, were lower (1.7, 1.2, and 0.6, respectively). Conclusions Existing indicators of esophageal subsite boundaries were not consistent with anatomical boundaries. Modification of the distance from the superior incisor dentition based on average distances from anatomical landmarks or the use of alternative endoscopic landmarks is recommended to provide more suitable anatomical boundaries.https://doi.org/10.1002/deo2.273classificationendoscopyesophaguslandmarkpharynx |
| spellingShingle | Ryu Ishihara Yasuhiro Tani Yuki Okubo Yuya Asada Tomoya Ueda Daiki Kitagawa Takehiro Ninomiya Atsuko Tamashiro Shunsuke Yoshii Satoki Shichijo Takashi Kanesaka Sachiko Yamamoto Yoji Takeuchi Koji Higashino Noriya Uedo Tomoki Michida Endoscopic landmarks corresponding to anatomical landmarks for esophageal subsite classification DEN Open classification endoscopy esophagus landmark pharynx |
| title | Endoscopic landmarks corresponding to anatomical landmarks for esophageal subsite classification |
| title_full | Endoscopic landmarks corresponding to anatomical landmarks for esophageal subsite classification |
| title_fullStr | Endoscopic landmarks corresponding to anatomical landmarks for esophageal subsite classification |
| title_full_unstemmed | Endoscopic landmarks corresponding to anatomical landmarks for esophageal subsite classification |
| title_short | Endoscopic landmarks corresponding to anatomical landmarks for esophageal subsite classification |
| title_sort | endoscopic landmarks corresponding to anatomical landmarks for esophageal subsite classification |
| topic | classification endoscopy esophagus landmark pharynx |
| url | https://doi.org/10.1002/deo2.273 |
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