A Case of Mucocele of the Appendix Resected in a Pregnant Woman

Tanaka, Hiroyuki; Horie, Hisanaga; Kurita, Mari; Hamada, Toru; Kumano, Hiroaki; Koinuma, Koji; Miyakura, Yasuyuki; Togashi, Kazutomo; Yasuda, Yoshikazu; Hironaka, Mitsugu

doi:10.5833/jjgs.42.680

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…If the diagnosis is not made incidentally during routine ultrasonography, it may be made during acute cases of appendicitis or peritonitis in pregnancy, 7 or intra‐operatively during a gynaecological procedure to remove a suspected adnexal mass 8 . In the largest surgical case series of LAMN (135 cases over 24 years), only 19% of patients had an accurate pre‐operative diagnosis, with only two being identified on ultrasonography 6 .…”

Section: Discussionmentioning

confidence: 99%

The ‘onion skin’ sign of a low‐grade appendiceal mucinous neoplasm: An incidental finding during early pregnancy assessment

Fourie,

Al Memar,

Tuomey

et al. 2024

Australas J Ultrason Med

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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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Section: Discussionmentioning

confidence: 99%