A case of diverticulum of the appendiceal base resembling a submucosal tumor of the cecum under colonoscopy: a hitherto undescribed lesion
Abstract Background Diverticulosis of the appendix is an uncommon clinical entity, and a preoperative diagnosis is often difficult. Herein we report an unusual case of appendiceal diverticulosis. Case presentation A 72-year-old male was referred to our hospital to examine the cause of hematochezia....
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| Format: | Article |
| Language: | English |
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BMC
2022-05-01
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| Series: | BMC Gastroenterology |
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| Online Access: | https://doi.org/10.1186/s12876-022-02337-3 |
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| author | Toshihisa Kimura Takanori Goi Yuki Kidoguchi Kenji Ohnishi Tamotsu Togawa Atsushi Iida Yasunori Sato |
| author_facet | Toshihisa Kimura Takanori Goi Yuki Kidoguchi Kenji Ohnishi Tamotsu Togawa Atsushi Iida Yasunori Sato |
| author_sort | Toshihisa Kimura |
| collection | DOAJ |
| description | Abstract Background Diverticulosis of the appendix is an uncommon clinical entity, and a preoperative diagnosis is often difficult. Herein we report an unusual case of appendiceal diverticulosis. Case presentation A 72-year-old male was referred to our hospital to examine the cause of hematochezia. A colonoscopy study showed a protruding lesion resembling a submucosal tumor (SMT), approximately 20 mm in diameter, at the site around the appendiceal orifice of the cecum. An abdominal computed tomography and magnetic resonance imaging showed a cystic lesion at the appendiceal base. The lesion was clinically diagnosed as a cystic tumor of the appendix, but the possibility of a malignant tumor could not be excluded. Therefore, a laparoscopic ileocecal resection with lymph node dissection was performed. The pathological examination of the resected specimen revealed that the lesion was a diverticulum (pseudodiverticulum) occurring solitarily at the appendiceal base, in which the mucosal layer of the appendix was invaginated into the submucosa of the adjacent cecum, thus forming an SMT-like lesion. Conclusion To our knowledge, this is the first case report in the English literature showing that an appendiceal diverticulum can manifest as an SMT-like lesion in the cecum. This condition should be recognized as a differential diagnosis for such lesions. |
| first_indexed | 2024-12-12T12:52:49Z |
| format | Article |
| id | doaj.art-49cb7e5d8be34138931c5cfa2c3a72a5 |
| institution | Directory Open Access Journal |
| issn | 1471-230X |
| language | English |
| last_indexed | 2024-12-12T12:52:49Z |
| publishDate | 2022-05-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Gastroenterology |
| spelling | doaj.art-49cb7e5d8be34138931c5cfa2c3a72a52022-12-22T00:23:57ZengBMCBMC Gastroenterology1471-230X2022-05-012211610.1186/s12876-022-02337-3A case of diverticulum of the appendiceal base resembling a submucosal tumor of the cecum under colonoscopy: a hitherto undescribed lesionToshihisa Kimura0Takanori Goi1Yuki Kidoguchi2Kenji Ohnishi3Tamotsu Togawa4Atsushi Iida5Yasunori Sato6Department of Surgery, National Hospital Organization, Tsuruga Medical CenterFirst Department of Surgery, Faculty of Medicine, University of FukuiDepartment of Surgery, National Hospital Organization, Tsuruga Medical CenterDepartment of Surgery, National Hospital Organization, Tsuruga Medical CenterDepartment of Surgery, National Hospital Organization, Tsuruga Medical CenterDepartment of Surgery, National Hospital Organization, Tsuruga Medical CenterDepartment of Human Pathology, Kanazawa University Graduate School of MedicineAbstract Background Diverticulosis of the appendix is an uncommon clinical entity, and a preoperative diagnosis is often difficult. Herein we report an unusual case of appendiceal diverticulosis. Case presentation A 72-year-old male was referred to our hospital to examine the cause of hematochezia. A colonoscopy study showed a protruding lesion resembling a submucosal tumor (SMT), approximately 20 mm in diameter, at the site around the appendiceal orifice of the cecum. An abdominal computed tomography and magnetic resonance imaging showed a cystic lesion at the appendiceal base. The lesion was clinically diagnosed as a cystic tumor of the appendix, but the possibility of a malignant tumor could not be excluded. Therefore, a laparoscopic ileocecal resection with lymph node dissection was performed. The pathological examination of the resected specimen revealed that the lesion was a diverticulum (pseudodiverticulum) occurring solitarily at the appendiceal base, in which the mucosal layer of the appendix was invaginated into the submucosa of the adjacent cecum, thus forming an SMT-like lesion. Conclusion To our knowledge, this is the first case report in the English literature showing that an appendiceal diverticulum can manifest as an SMT-like lesion in the cecum. This condition should be recognized as a differential diagnosis for such lesions.https://doi.org/10.1186/s12876-022-02337-3AppendixDiverticulumDiverticulosisColonoscopyCase report |
| spellingShingle | Toshihisa Kimura Takanori Goi Yuki Kidoguchi Kenji Ohnishi Tamotsu Togawa Atsushi Iida Yasunori Sato A case of diverticulum of the appendiceal base resembling a submucosal tumor of the cecum under colonoscopy: a hitherto undescribed lesion BMC Gastroenterology Appendix Diverticulum Diverticulosis Colonoscopy Case report |
| title | A case of diverticulum of the appendiceal base resembling a submucosal tumor of the cecum under colonoscopy: a hitherto undescribed lesion |
| title_full | A case of diverticulum of the appendiceal base resembling a submucosal tumor of the cecum under colonoscopy: a hitherto undescribed lesion |
| title_fullStr | A case of diverticulum of the appendiceal base resembling a submucosal tumor of the cecum under colonoscopy: a hitherto undescribed lesion |
| title_full_unstemmed | A case of diverticulum of the appendiceal base resembling a submucosal tumor of the cecum under colonoscopy: a hitherto undescribed lesion |
| title_short | A case of diverticulum of the appendiceal base resembling a submucosal tumor of the cecum under colonoscopy: a hitherto undescribed lesion |
| title_sort | case of diverticulum of the appendiceal base resembling a submucosal tumor of the cecum under colonoscopy a hitherto undescribed lesion |
| topic | Appendix Diverticulum Diverticulosis Colonoscopy Case report |
| url | https://doi.org/10.1186/s12876-022-02337-3 |
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