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. 2016:2016:9302376.
doi: 10.1155/2016/9302376. Epub 2016 May 8.

Primary Umbilical Endometriosis: Unusual and Rare Clinical Presentation

Fuminori Taniguchi  1 , Eriko Hirakawa  1 , Yukihiro Azuma  1 , Chihiro Uejima  2 , Keigo Ashida  2 , Tasuku Harada  1
Affiliations

Primary Umbilical Endometriosis: Unusual and Rare Clinical Presentation

Fuminori Taniguchi et al. Case Rep Obstet Gynecol. 2016.

Abstract

Primary umbilical endometriosis is a rare disorder and is defined as the presence of ectopic endometrial tissue within the umbilicus. A patient with painful mass in the umbilicus during menstrual period is studied in this paper. The possibility of subcutaneous endometriosis should be considered when an umbilical mass is detected despite the absence of previous surgery. In this case, urachal cancer, urachal remnant, umbilical endometriosis, and its malignant transformation were among the diseases considered in the differential diagnosis. Complete excision and histology are necessary to obtain a definitive diagnosis and optimal treatment for umbilical subcutaneous endometriosis.

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Figures

Figure 1
Figure 1
(a) Transcutaneous USG and (b) abdominal MRI (T2-weighted sequence). USG showed 1.0 × 1.5 cm umbilical nodule. MRI also exhibited the hypodense umbilical nodule (arrow) and myoma (asterisk).
Figure 2
Figure 2
The specimens of fine needle aspiration biopsy. Bar: 100 μm.
Figure 3
Figure 3
(a) Excised specimen of the umbilicus with surrounded tissue. (b) Histological microscopic view of this lesion demonstrated endometrial gland and stroma (H&E staining: ×10).
See this image and copyright information in PMC

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