Abstract
Mesenteric neuroendocrine tumors are usually metastases originating from the small intestine; however, primary mesenteric cases are rare. We present an interesting case of a mesenteric neuroendocrine tumor that changed its internal composition from cystic to solid. A 72-year-old male visited our hospital because of epigastralgia 4 years earlier. A 25-mm tumor was recognized around the terminal duodenum on computed tomography and magnetic resonance imaging, and was diagnosed as a cystic lesion. Over the following 2 years, the tumor grew to 40 mm and its internal composition changed from cystic to solid. The lesion showed positive findings on fluorodeoxyglucose positron emission tomography. Upon laparotomy, a solid tumor was detected in the mesentery of the jejunum near the ligament of Treitz. The tumor was extracted without intestinal resection and was diagnosed as a low-grade neuroendocrine tumor after histopathological and immunohistochemical examination. One year has passed since the operation, and there has been no recurrence.
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Akira Yasuda, Hidehiko Kitagami, Yasuhiro Kondo, Keisuke Nonoyama, Kaori Watanabe, Shiro Fujihata, Hirotaka Miyai, Minoru Yamamoto, Yasunobu Shimizu and Moritsugu Tanaka declare that they have no conflict of interest.
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Yasuda, A., Kitagami, H., Kondo, Y. et al. Primary mesenteric neuroendocrine tumor that changed its internal composition from cystic to solid: a case report. Clin J Gastroenterol 10, 18–22 (2017). https://doi.org/10.1007/s12328-016-0695-y
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DOI: https://doi.org/10.1007/s12328-016-0695-y