Ultrasonographic findings in primary umbilical endometriosis

Giovanni Genovese, Emanuela Passoni, Stefano Veraldi, Gianluca Nazzaro
Anais brasileiros de dermatologia · 2018 · vol. 93(2) , pp. 297–298 · doi:10.1590/abd1806-4841.20187076 · PMID:29723349 · PMC5916414 · W2800737932
article OA: gold CC0 ⤵ 14 in-corpus citations
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⚙ AI-generated summary by claude@2026-06, 2026-06-07 ⓘ

This paper describes the specific ultrasonographic findings observed in primary umbilical endometriosis, also known as Villar's nodule, to aid in its diagnosis and surgical treatment.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-07 ⓘ

The paper reports a 42-year-old woman with primary umbilical endometriosis (Villar’s nodule) presenting as a painful umbilical nodule, despite no prior abdominal or pelvic surgery, and with a 4-year history of pelvic endometriosis. Using high-frequency ultrasonography with power Doppler, the authors describe an isoechoic, non-homogeneous roundish dermal/subcutaneous nodule with multiple hyperechoic foci and abundant intranodular vascularization, followed by surgical excision and histopathologic confirmation. They note that ultrasonographic features of primary umbilical endometriosis are not well characterized in the literature, with only three English-language ultrasound-evaluated cases previously reported, and that their observation contrasts with prior reports while also highlighting a possible association with prior ovarian stimulation (though it remains unclear). This paper is centrally about endometriosis — it specifically characterizes ultrasonographic and Doppler findings in primary umbilical endometriosis (Villar’s nodule) in a patient with coexisting pelvic endometriosis.

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Abstract

Primary cutaneous endometriosis is a rare condition. It appears without a prior history of surgical procedure and the umbilicus is the most frequently involved area. Primary umbilical endometriosis, or Villar's nodule, usually presents as a painful nodule. Its differential diagnosis may be challenging. Although histopathological assessment represents the gold standard for diagnosis, cutaneous ultrasonography may be useful in guiding the surgical treatment. Ultrasonographic features of cutaneous endometriosis have not yet been fully explored in the literature. Hence, we report peculiar ultrasonographic findings of primary umbilical endometriosis.

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Endometriosis Skin Diseases Skin Diseases Umbilicus Umbilicus Adult Endometriosis Female Humans Skin Diseases Ultrasonography, Doppler, Color Umbilicus

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Cited by (14)

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