A presumptive diagnosis of bone metastasis can be easily made when a patient with a history of colorectal cancer develops bone lesions that are seen on follow-up imaging. In this case report, we describe a patient whose multiple bone lesions were wrongly attributed to a recurrence of rectal cancer rather than being identified as multiple myeloma lesions. When clinicians detect new, abnormal, bony lesions in a patient with a previous history of cancer, they should consider diseases such as multiple myeloma in their differential diagnosis.

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  Reactions Weekly.2017; 1661(1): 71.     CrossRef

Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. These tumors tend to present most frequently in the stomach, followed by the small intestine. GISTs can also arise from the omentum, retroperitoneum, mesentery, or pleura and are termed extragastrointestinal stromal tumors (EGISTs) when they do so. EGISTs arising from the omentum are very rare. Due to the limited incidence of EGISTs in the omentum, the diagnostic criteria are not well established, and making a correct diagnosis may be difficult. In this report, we present a case of an EGIST of the omentum with peritoneal metastasis that was initially suspected to be an appendiceal mucinous carcinoma with carcinomatosis on positron emission tomography/computed tomography imaging.

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• An update on gastrointestinal stromal tumors (GISTs) with a focus on extragastrointestinal stromal tumors (EGISTs)
  Fatima Usama, Rohullah Rasikh, Khawaja Hassam, Mansoor Rahman, FNU Khalil Ur Rehman, Iman Waheed Khan, Daryl T -Y Lau
  Gastroenterology Report.2025;[Epub]     CrossRef
• Primary Extragastrointestinal Stromal Tumor of Greater Omentum with Intraperitoneal Bleeding
  Masatoshi Kataoka, Tsukasa Saitoh, Kousaku Kawashima, Tomotaka Yazaki, Hiroki Sonoyama, Eiko Okimoto, Akihiko Oka, Yoshiyuki Mishima, Tsuyoshi Mishiro, Naoki Oshima, Kotaro Shibagaki, Hiroshi Tobita, Ichiro Moriyama, Norihisa Ishimura, Mamiko Nagase, Nori
  Internal Medicine.2021; 60(21): 3413.     CrossRef
• Recurrent and metastatic extragastrointestinal stromal tumors of the mesentery with C-KIT and PDGFRA mutations: a case report
  Huang Yayu, Zhang Changmao, Dai Yijun, Lin Na, Xu Tianwen, Dai Yangbin
  Cancer Biology & Therapy.2020; 21(2): 101.     CrossRef
• Mucinous Carcinomatosis: A Rare Association between an Ovarian Tumor and an E-GIST
  Hugo Palma Rios, André Goulart, Pedro Leão
  Case Reports in Surgery.2018; 2018: 1.     CrossRef
• Extra-gastrointestinal stromal tumour. Report of primary tumour in the omentum
  E.N. Valdes-Peregrina, M. Hernández-González, O. de León-Pacheco, S. Mendoza-Ramírez
  Revista Médica del Hospital General de México.2018; 81(4): 221.     CrossRef
• Clinicopathological features and prognosis of omental gastrointestinal stromal tumor: evaluation of a pooled case series
  Fan Feng, Yangzi Tian, Zhen Liu, Shushang Liu, Guanghui Xu, Man Guo, Xiao Lian, Daiming Fan, Hongwei Zhang
  Scientific Reports.2016;[Epub]     CrossRef