title: Low-grade mucinous neoplasia in a cecal diverticulum: A case report.
abstract: BACKGROUND
  Low-grade mucinous neoplasia is an uncommon benign tumor that develops in the appendix. The development of mucocele disease has never been reported in a colonic diverticulum. We present a case developing low-grade mucinous neoplasia in a cecal diverticulum.
  
  
  METHODS
  A tumor in the ileocecal region was found during a medical examination of a 66-year-old woman. Three months later, the tumor was still present and the patient developed abdominal pain. Laparoscopic ileocecal resection with D2 lymph node dissection was performed. Histopathological examination revealed a low-grade mucinous neoplasm in a cecal diverticulum.
  
  
  CONCLUSIONS
  Colonic mucoceles reportedly originate from the appendix. There are no previous reports of mucocele disease in a colonic diverticulum worldwide. This report reviews and discusses the management of the appendiceal mucoceles.
  
  
  CONCLUSIONS
  The incidence of colonic diverticula has recently begun to increase in Japan. The possibility of a mucocele within a colonic diverticulum should be considered in patients with submucosal colonic tumors.
authors: Department of Surgery, Kansai Medical University, 10-15 Fumizonocho, Moriguchi, Osaka 570-8507, Japan. Electronic address: nakataka@takii.kmu.ac.jp.
authors: Kazuyoshi
authors: K
authors: Nakatani
authors: Department of Surgery, Kansai Medical University, 10-15 Fumizonocho, Moriguchi, Osaka 570-8507, Japan. Electronic address: tokuhark@takii.kmu.ac.jp.
authors: Katsuji
authors: K
authors: Tokuhara
authors: Department of Surgery, Kansai Medical University, 10-15 Fumizonocho, Moriguchi, Osaka 570-8507, Japan. Electronic address: sakaguct@hirakata.kmu.ac.jp.
authors: Tatsuma
authors: T
authors: Sakaguchi
authors: Department of Surgery, Kansai Medical University, 10-15 Fumizonocho, Moriguchi, Osaka 570-8507, Japan. Electronic address: ryoutahr@hirakata.kmu.ac.jp.
authors: Hironori
authors: H
authors: Ryota
authors: Department of Surgery, Kansai Medical University, 10-15 Fumizonocho, Moriguchi, Osaka 570-8507, Japan. Electronic address: yoshiokk@takii.kmu.ac.jp.
authors: Kazuhiko
authors: K
authors: Yoshioka
authors: Department of Surgery, Kansai Medical University, 10-15 Fumizonocho, Moriguchi, Osaka 570-8507, Japan. Electronic address: kon@hirakata.kmu.ac.jp.
authors: Masanori
authors: M
authors: Kon
keywords: Diverticulum; Mucinous cystadenocarcinoma; Mucinous cystadenoma; Mucinous neoplasia