Endometriosis of Right Inguinal Subcutaneous Tissue

Hiroyuki Tsuchie, Takenori Tomite, Kyoji Okada, Naohisa Miyakoshi, Hiroyuki Nagasawa, Shuichi Chida, Hiroshi Nanjo, Yoichi Shimada
In: Journal of Medical Cases · 2016 · vol. 7(3) , pp. 98–101 · doi:10.14740/jmc2428w · W4256294756
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This case report describes a 45-year-old woman with endometriosis in the right inguinal subcutaneous tissue, highlighting that histological examination is mandatory for diagnosis due to variable MRI signals.

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This case report describes a 45-year-old Japanese woman presenting with a painful, fluctuating mass in the right inguinal region that correlated with her menstrual cycle. Imaging revealed a lesion near the rectus abdominis muscle, which was confirmed as endometriosis through excisional biopsy and histological examination. The patient experienced complete relief of symptoms post-surgery with no recurrence observed at the thirty-month follow-up. This paper is centrally about endometriosis — specifically documenting an unusual presentation of deep infiltrating endometriosis within the right inguinal subcutaneous tissue.

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Abstract

Endometriosis is usually found in intrapelvic structures such as ovaries, pelvic peritoneum and Douglas pouch. We report an unusual case of endometriosis in the right inguinal region. A 45-year-old Japanese woman complained of pain and a mass in the right inguinal region, and her symptoms fluctuated with the menstrual cycle. A poorly defined and elastic hard mass was palpable in the right inguinal region. Magnetic resonance imaging (MRI) showed mass in front of the pubis measuring 2 × 1 cm at the lower edge of the rectus abdominis muscle. We performed an excisional biopsy and pathological diagnosis was endometriosis. After the operation, she was relieved from pain and did not show any recurrence at the latest follow-up 30 months after the surgery. In patients with an inguinal subcutaneous mass complaining of periodic change of symptoms, endometriosis should be considered as a differential diagnosis. Since endometriosis can show variable signals on MRI, histological examination including biopsy is mandatory. J Med Cases. 2016;7(3):98-101 doi: https://doi.org/10.14740/jmc2428w
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Abstract

Endometriosis is usually found in intrapelvic structures such as ovaries, pelvic peritoneum and Douglas pouch. We report an unusual case of endometriosis in the right inguinal region. A 45-year-old Japanese woman complained of pain and a mass in the right inguinal region, and her symptoms fluctuated with the menstrual cycle. A poorly defined and elastic hard mass was palpable in the right inguinal region. Magnetic resonance imaging (MRI) showed mass in front of the pubis measuring 2 × 1 cm at the lower edge of the rectus abdominis muscle. We performed an excisional biopsy and pathological diagnosis was endometriosis. After the operation, she was relieved from pain and did not show any recurrence at the latest follow-up 30 months after the surgery. In patients with an inguinal subcutaneous mass complaining of periodic change of symptoms, endometriosis should be considered as a differential diagnosis. Since endometriosis can show variable signals on MRI, histological examination including biopsy is mandatory. J Med Cases. 2016;7(3):98-101 doi: https://doi.org/10.14740/jmc2428w J Med Cases. 2016;7(3):98-101 doi: https://doi.org/10.14740/jmc2428w

Keywords

Endometriosis; Inguinal subcutaneous tissue; Histology

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