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Case Reports
. 2023 Feb 21;2023(2):rjad039.
doi: 10.1093/jscr/rjad039. eCollection 2023 Feb.

An unusual case of colonic duplication cyst in an adult with dysplasia

Aswin Shanmugalingam  1 , Hayley Duxbury  2 , Joseph Do Woong Choi  1 , Charlotte Kwik  1 , Chow Heok P'Ng  2 , Lauren Kim  2 , Nimalan Pathma-Nathan  1
Affiliations
Case Reports

An unusual case of colonic duplication cyst in an adult with dysplasia

Aswin Shanmugalingam et al. J Surg Case Rep. .

Erratum in

Abstract

Duplication cysts are rare benign congenital malformations typically identified in children by the age of 2 years. We report a rare case of colonic duplication cyst with dysplasia in an adult. A 32-year-old male was diagnosed with non-specific abdominal symptoms. Abdominopelvic computed tomography scan demonstrated a submucosal cystic lesion in the right colon. He underwent laparoscopic right hemicolectomy. Histopathology showed colonic duplication cyst with low grade dysplasia. He is due for a surveillance colonoscopy in 3 years. Duplication cyst in an adult colon with dysplasia is extremely rare. They are usually present in the terminal ileum. They have non-specific abdominal symptoms or can be asymptomatic. They are often identified incidentally or intraoperatively. Imaging may demonstrate a cystic lesion. Histopathology is required for definitive diagnosis. There are no guidelines or consensus on managing duplication cysts in adults. We recommend an oncological resection of the involved colon. Surveillance with routine colonoscopy is advisable.

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Figures

Figure 1
Figure 1
Ultrasound image demonstrating a cystic lesion with internal calcification and no hypervascularity.
Figure 2
Figure 2
Axial CT abdomen demonstrating a cystic submucosal lesion at the right colon (green arrow). There is involvement of the colonic lumen but no obstruction with oral contrasting passing through the lumen (blue arrow).
Figure 3
Figure 3
Colonoscopy view of the colonic duplication cyst.
Figure 4
Figure 4
Macroscopic view of specimen post-fixation, with duplication cyst visible at lower right within caecum (arrow).
Figure 5
Figure 5
Dissection of specimen; duplication cyst (asterisk) with adjacent bowel wall visible.
Figure 6
Figure 6
Remnant of normal colonic epithelium (left) within the duplication cyst that shares common muscularis propria with the terminal ileum (right), low power.
Figure 7
Figure 7
Area of dysplastic mucosa (right) within the duplication cyst that shares a common wall with the right colon (left), low power.
Figure 8
Figure 8
Low grade dysplasia in duplication cyst epithelium, high power.
See this image and copyright information in PMC

References

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