Role of EUS and EUS-guided FNA in the diagnosis of rectal implantation cyst at an anastomosis site after a previous low anterior resection for a rectal cancer without evidence of cancer recurrence

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• 作者：Kuniomi Honda ; Kazuya Akahoshi ; Noriaki Matsui ; Yasuaki Motomura ; Masaru Kubokawa ; Naomi Higuchi ; Shingo Endo ; Kentaro Taki ; Masafumi Oya
• 刊名：Gastrointestinal Endoscopy
• 出版年：2008
• 出版时间：October 2008
• 年：2008
• 卷：68
• 期：4
• 页码：782-785
• 全文大小：443 K

文摘

Background

Rectal implantation cysts occurring at an anastomosis site after a low anterior resection for rectal cancer need to be distinguished from locally recurrent rectal cancer.

Objective

Our purpose was to evaluate the role of EUS and EUS-FNA in the diagnosis of rectal implantation cyst.

Design

Case series.

Patients

A review of medical records identified 3 men and 1 woman who were diagnosed with rectal implantation cyst by EUS and EUS-FNA.

Results

All 4 cases had undergone a low anterior resection with the double-stapling technique for a rectal cancer from 12 to 67 months (median 33.8 months) earlier. Follow-up colonoscopy revealed a rectal submucosal tumor at an anastomosis site. EUS revealed cystic lesions with heterogeneous wall thickness from the third layer or the fourth layer to the surroundings. EUS-FNA revealed mucin that contained a few inflammatory cells and no malignant cells in any of the patients. From the findings of EUS and EUS-FNA, all patients were diagnosed with rectal implantation cyst, thus avoiding surgery.

Limitation

Small number of patients.

Conclusions

EUS and EUS-FNA are useful in the diagnosis of rectal implantation cyst and the avoidance of unnecessary radical surgery.