A Case of Mucinous Cystadenoma of the Appendix with Intussusception in which MDCT was Helpful in Diagnosis

Shigeki Murakami, Takasuke Takebayashi, Masanori Takeda, Hideki Tadatomo, Hiroshi Isozaki, Tatsuo Shou, Kiyohiro Ishihara and Kunihiko Sakai

Oomoto Hospital

We report a case of mucinous cystadenoma of the appendix with intussusception. A 46-year-old woman came to our hospital because of abdominal pain and diarrhea. Ultrasonography revealed a target sign and multidetector computed tomography showed a multiconcentric ring sign in the transverse colon, and a diagnosis of intussusception induced by a cystic mass was made. A gastrografin enema showed a crab-claw-like area without filling in the proximal transverse colon. After reduction of the intussusception by means of a gastrografin enema, a hemispheric protrusion persisted, and no gastrografin entered into the ileum. Iliocecal resection was performed. The appendix was swollen to 7.5×3 cm in size, and proximal end of the appendix had invaginated into the cecum. The pathological diagnosis was mucinous cystadenoma of the appendix. Coronal reconstruction CT was helpful in making the diagnosis of intussusception.

Key words
mucinous cystadenoma of the appendix, intussusception, multidetector CT

Reprint requests
Shigeki Murakami Oomoto Hospital
1-1-5 Oomoto Okayama, 700-0924 JAPAN

Accepted
September 27, 2006

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