ArticleAustralasian journal of ultrasound in medicine2024
The 'onion skin' sign of a low-grade appendiceal mucinous neoplasm: An incidental finding during early pregnancy assessment.
Article in Australasian journal of ultrasound in medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- Low-Grade Appendiceal Mucinous Neoplasm as an Incidental Finding During Cesarean Section: A Case Report.The American journal of case reports · 2025Article
- Onion skin sign of mucocele of the appendix-A rare entity.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2025Article
- Article
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6 authors.
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Abstract
A low-grade appendiceal mucinous neoplasm (LAMN) is a cystic dilatation of the appendix resulting from the accumulation of mucinous secretions caused by a luminal obstruction. Although usually benign, pseudomyxoma peritonei may occur in the event of rupture, and 10% of cases may be secondary to appendiceal cystadenocarcinoma. A LAMN is both more common and more likely to have a malignant association in women, making it an entity with which practitioners of gynaecological ultrasound should be familiar. Although not the primary aim, early pregnancy ultrasound assessments can offer the diagnostic opportunity to identify pelvic pathology. A LAMN can be identified on ultrasonography by visualisation of an adnexal mass separate to the ovary, which due to the layers of secretions has a distinctive appearance previously likened to 'onion-skin' or 'whipped-cream'. Here, we describe an incidental finding of a LAMN during an early pregnancy assessment. Practitioners of early pregnancy ultrasound should be familiar with the characteristic morphology of this rare but important finding.
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