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CT FINDING OF MUCOCELE ADE OF THE APPENDIX
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Abstract
Objective: Evaluation of Imaging Features of Appendiceal Mucinous Neoplasms (Appendiceal mucocele) on Computed Tomography (CT).) Subjects and methods: Retrospective descriptive study on 40 patients, who underwent surgery and were diagnosed with appendiceal mucocele on histopathology, who had CT scans at at at Hanoi University of Medicine Hospital from January 2021 to October 2024. Results: The study was conducted on 40 patients who had undergone surgery, were diagnosed with appendiceal mucocele based on histopathology, and had previously undergone CT scans. The patients were divided into three groups: malignant appendiceal mucocele (10%), inflammatory appendiceal mucocele (15%), and non-inflammatory benign appendiceal mucocele (10%). Cases of inflammatory or malignant appendiceal mucocele all presented with associated clinical symptoms. On CT imaging, the appendiceal mucocele was dilated with a large diameter (average 23.7mm), had low density (average 20.3±9.4HU), with calcification seen in about 45% of cases, and fecaliths were found in only 5% of cases. Benign appendiceal mucocele had smooth walls (100%). Both inflammatory and malignant appendiceal mucoceles showed surrounding infiltration. Malignant appendiceal mucocele had uneven wall thickening, with a high rate of wall discontinuity (50%), and often showed damage to the peritoneum and omentum. (50%), and was frequently associated with peritoneal and omental involvement. Conclusion: Features such as a large diameter (mean 23.7mm) and calcification of the wall suggest the diagnosis of appendiceal mucocele. Irregular wall thickening, abdominal fluid, peritoneal and omental lesion involvement are high indicators of malignant appendiceal mucocele.
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Keywords
Mucocele, appendiceal mucocele, mucinous adenocarcinoma of the appendix
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