sQUIZ your knowledge! A tender nodule in the umbilicus of a young fertile woman.

Balaguer-Franch I, Lozano-Masdemont B, Rodriguez-Lomba E
European journal of dermatology : EJD · 2021 · doi:10.1684/ejd.2021.4040 · PMID:34001495
OA: closed
🔓 Open OA copy Full text JSON View on PubMed View at publisher
⚙ AI-generated summary by qwen3.7-flash+body, 2026-08-26 ⓘ

A 41-year-old woman presented with a tender, cyclically enlarging umbilical nodule that histopathological analysis identified as endometriosis.

One-sentence paraphrase of the abstract; not a substitute for reading it. No clinical advice. How this works

⚙ AI-generated deep summary by qwen3.7-flash, 2026-08-26 · read from full text ⓘ

This case report describes a 41-year-old woman presenting with a progressively enlarging, tender umbilical nodule that exhibited cyclic pain and swelling coinciding with her menstrual cycle. Physical examination identified a blue-brownish subcutaneous lesion, and subsequent histopathological analysis confirmed the presence of glandular tissue consistent with ectopic endometrial implants. The clinical presentation and pathological findings support a diagnosis of umbilical endometriosis, also known as endometrioma of the umbilicus or Sister Mary Joseph nodule in this specific context. This paper is centrally about endometriosis — specifically cutaneous endometriosis manifesting as an umbilical nodule.

Read from the paper's body, not the abstract. Not a substitute for reading the paper. No clinical advice. How this works

Full text 964 characters · extracted from oa-doi-fallback · click to expand
European Journal of Dermatology MENUsQUIZ your knowledge! A tender nodule in the umbilicus of a young fertile woman Volume 31, numéro 2, March-April 2021 Illustrations 1 Department of Dermatology and Venereology, Hospital General Universitario Gregorio Marañón, Madrid, Spain 2 Department of Dermatology and Venereology, Hospital General Universitario de Mostoles, Madrid, Spain - DOI : 10.1684/ejd.2021.4040 - Page(s) : 300-2 - Année de parution : 2021 A 41-year-old woman presented with an umbilical nodule that was noticed five months ago and had enlarged progressively. She had no relevant surgical history and had three healthy children who were born without complications. The patient experienced cyclic pain and increase in size of the nodule with menstruation. On physical examination, the blue-brownish subcutaneous nodule on the right side of the umbilicus showed tenderness on palpation (figure 1A). Histopathological analysis revealed a glandular [...]

Text is read by the "Ask this paper" AI Q&A widget below. Extraction quality varies by source — PMC NXML preserves structure cleanly, OA-HTML may include some navigation residue, and OA-PDF can have broken hyphenation. The publisher copy (via DOI) is the canonical version.

My notes (saved in your browser only)

⚙ Ask this paper AI returns verbatim quotes from the full text · source: oa-doi-fallback ⓘ

Answers must be backed by verbatim quotes from this paper's full text. Hallucinated quotes are dropped automatically; if no verbatim passage answers the question, we say so. How this works

Citation neighborhood (no data yet)

We don't have any in-corpus citations linked to this paper yet. The paper's references may be in our DB but unresolved to ``paper_id`` (resolution happens at ingest when the cited DOI matches a row we already have). Run the cross-source citation reconcile pass to retry.

Source provenance

europepmc
last seen: 2026-09-20T09:27:46.357103+00:00
unpaywall
last seen: 2026-09-24T06:17:16.569905+00:00