A Case of Omental Neuroendocrine Tumor Discovered Incidentally: Case Report
Neuroendocrine cells are distributed throughout the body’s organs, though neuroendocrine neoplasms are primarily documented in the gastrointestinal tract and pancreas, with rare occurrences elsewhere. Herein, we report a case of primary neuroendocrine tumor of the omentum (omental NET) that was inci...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2025-03-01
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| Series: | Journal of Investigative Medicine High Impact Case Reports |
| Online Access: | https://doi.org/10.1177/23247096241299286 |
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| author | Masataka Taki MD Toshikatsu Nitta MD, PhD Ryutaro Kubo MD Aki Yoshiyama MD Hidero Yoshimoto MD Masatsugu Ishii MD, PhD Takashi Ishibashi MD, PhD Atsushi Takeshita MD, PhD |
| author_facet | Masataka Taki MD Toshikatsu Nitta MD, PhD Ryutaro Kubo MD Aki Yoshiyama MD Hidero Yoshimoto MD Masatsugu Ishii MD, PhD Takashi Ishibashi MD, PhD Atsushi Takeshita MD, PhD |
| author_sort | Masataka Taki MD |
| collection | DOAJ |
| description | Neuroendocrine cells are distributed throughout the body’s organs, though neuroendocrine neoplasms are primarily documented in the gastrointestinal tract and pancreas, with rare occurrences elsewhere. Herein, we report a case of primary neuroendocrine tumor of the omentum (omental NET) that was incidentally detected as an omental mass during preoperative screening for colorectal cancer. The patient, a 66-year-old woman, with abdominal pain and decreased oral intake, leading to a diagnosis of obstructive colorectal cancer with a large, 55 mm, mass around the gastropyloric region, which was discontinuous with the gastrointestinal tract. After the placement of a colonic stent at the site of the ascending colon cancer to decompress the colon, a laparoscopic right hemicolectomy was performed, simultaneously excising the mass. Postoperative pathology revealed a neuroendocrine tumor (NET). Subsequent examinations detected no other lesions of suspected primary disease and postoperative somatostatin scintigraphy found no other lesions, establishing a diagnosis of omental NET. The rarity of omental NETs is attributable to the absence of neuroendocrine cells in the omentum. Moreover, solid tumors originating primarily from the omentum are very rare, making preoperative diagnosis difficult; therefore, postoperative pathology should be utilized. We presented a very rare case of omental NET, previously reported only once in the literature, and believe that complete resection with minimal invasiveness should be performed for treatment of this malignancy. In addition, we emphasize the need for continued patient follow-up. |
| format | Article |
| id | doaj-art-3803a4f6f75f4e10aa4e608d87d9dfa0 |
| institution | Kabale University |
| issn | 2324-7096 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Journal of Investigative Medicine High Impact Case Reports |
| spelling | doaj-art-3803a4f6f75f4e10aa4e608d87d9dfa02025-08-20T03:40:34ZengSAGE PublishingJournal of Investigative Medicine High Impact Case Reports2324-70962025-03-011310.1177/23247096241299286A Case of Omental Neuroendocrine Tumor Discovered Incidentally: Case ReportMasataka Taki MD0Toshikatsu Nitta MD, PhD1Ryutaro Kubo MD2Aki Yoshiyama MD3Hidero Yoshimoto MD4Masatsugu Ishii MD, PhD5Takashi Ishibashi MD, PhD6Atsushi Takeshita MD, PhD7Medico Shunju Shiroyama Hospital, Habikino, Osaka, JapanMedico Shunju Shiroyama Hospital, Habikino, Osaka, JapanMedico Shunju Shiroyama Hospital, Habikino, Osaka, JapanMedico Shunju Shiroyama Hospital, Habikino, Osaka, JapanMedico Shunju Shiroyama Hospital, Habikino, Osaka, JapanMedico Shunju Shiroyama Hospital, Habikino, Osaka, JapanMedico Shunju Shiroyama Hospital, Habikino, Osaka, JapanMedico Shunju Shiroyama Hospital, Habikino, Osaka, JapanNeuroendocrine cells are distributed throughout the body’s organs, though neuroendocrine neoplasms are primarily documented in the gastrointestinal tract and pancreas, with rare occurrences elsewhere. Herein, we report a case of primary neuroendocrine tumor of the omentum (omental NET) that was incidentally detected as an omental mass during preoperative screening for colorectal cancer. The patient, a 66-year-old woman, with abdominal pain and decreased oral intake, leading to a diagnosis of obstructive colorectal cancer with a large, 55 mm, mass around the gastropyloric region, which was discontinuous with the gastrointestinal tract. After the placement of a colonic stent at the site of the ascending colon cancer to decompress the colon, a laparoscopic right hemicolectomy was performed, simultaneously excising the mass. Postoperative pathology revealed a neuroendocrine tumor (NET). Subsequent examinations detected no other lesions of suspected primary disease and postoperative somatostatin scintigraphy found no other lesions, establishing a diagnosis of omental NET. The rarity of omental NETs is attributable to the absence of neuroendocrine cells in the omentum. Moreover, solid tumors originating primarily from the omentum are very rare, making preoperative diagnosis difficult; therefore, postoperative pathology should be utilized. We presented a very rare case of omental NET, previously reported only once in the literature, and believe that complete resection with minimal invasiveness should be performed for treatment of this malignancy. In addition, we emphasize the need for continued patient follow-up.https://doi.org/10.1177/23247096241299286 |
| spellingShingle | Masataka Taki MD Toshikatsu Nitta MD, PhD Ryutaro Kubo MD Aki Yoshiyama MD Hidero Yoshimoto MD Masatsugu Ishii MD, PhD Takashi Ishibashi MD, PhD Atsushi Takeshita MD, PhD A Case of Omental Neuroendocrine Tumor Discovered Incidentally: Case Report Journal of Investigative Medicine High Impact Case Reports |
| title | A Case of Omental Neuroendocrine Tumor Discovered Incidentally: Case Report |
| title_full | A Case of Omental Neuroendocrine Tumor Discovered Incidentally: Case Report |
| title_fullStr | A Case of Omental Neuroendocrine Tumor Discovered Incidentally: Case Report |
| title_full_unstemmed | A Case of Omental Neuroendocrine Tumor Discovered Incidentally: Case Report |
| title_short | A Case of Omental Neuroendocrine Tumor Discovered Incidentally: Case Report |
| title_sort | case of omental neuroendocrine tumor discovered incidentally case report |
| url | https://doi.org/10.1177/23247096241299286 |
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