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Evaluation of appendiceal mucinous neoplasms by curved linear-array echoendoscope: A preliminary study
Jing-Chao Zhang1, Yang-Yang Ma2, Yong-Zhen Lan1
1Endoscopy Center, Hebei Cangzhou Hospital of Integrated Traditional Chinese Medicine and Western Medicine, Cangzhou 061000, Hebei Province, China.
World Journal of Gastrointestinal Endoscopy
|January 8, 2024
Summary
Endoscopic ultrasound (EUS) using a linear-array echoendoscope can safely diagnose appendiceal mucinous neoplasms. Key imaging features like submucosal cystic hypoechoic lesions and the onion-peeling sign aid in preoperative diagnosis.
Area of Science:
- Gastroenterology
- Oncology
- Medical Imaging
Background:
- Preoperative diagnosis of appendiceal mucinous neoplasms presents significant challenges.
- Limited data exists on the endosonographic characteristics of these neoplasms.
Purpose of the Study:
- To retrospectively assess the imaging features of appendiceal mucinous neoplasms using endoscopic ultrasound (EUS).
- To evaluate the utility of a curved linear-array echoendoscope in visualizing these appendiceal lesions.
Main Methods:
- Retrospective analysis of patients with appendiceal mucinous neoplasms who underwent EUS between January 2018 and July 2023.
- Review of EUS characteristics and clinical data for 22 patients.
- Successful navigation of the linear-array echoendoscope to the ileocecal region in all cases.
Main Results:
- Endoscopic view revealed appendiceal orifice protrusion in all patients; a volcano sign was noted in two.
- EUS identified all 22 lesions as submucosal cystic hypoechoic masses with distinct borders.
- The onion-peeling sign was observed in 17 cases, with no wall nodules detected.
Conclusions:
- Linear-array echoendoscope EUS is a safe and effective method for reaching the ileocecal region.
- Distinct endoscopic and echoendosonographic features can aid in the preoperative diagnosis of appendiceal mucinous neoplasms.
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