Endometrioma involving the perianal tissues: Report of a case
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This report presents a rare case of endometriosis involving perianal tissues in a 29-year-old woman, confirmed by pathological examination showing endometrial glands and stroma.
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Abstract
Summary and Conclusions Endometriosis may involve the uterine cavity (internal) or ectopic areas outside the uterus (external). The usual sites of external endometriosis are within the pelvic cavity. They include the ovary, peritoneal surface of the uterus, uterosacral ligaments, cul de sac, peritoneum, uterovesical peritoneum, the rectovaginal septum, the rectum, all parts of the colon, the appendix, and the ileum. Less common locations for ectopic endometriosis include the umbilicus, abdominal wall scars, the vulva, and the perineum. Endometriosis involving the perianal tissues is rare, and when found it is ussually located in the perineum at the site of previous episiotomy scars. The generally accepted explanation for the pathogenesis of external endometriosis is a combination of Sampson's6 retrograde-flow theory and the theory of metaplasia expounded by Gruenwald.3 A case of endometriosis involving the perianal tissues in a 29-year-old woman has been presented. The diagnosis was entertained prior to surgery because of the relationship of the symptoms to the patient's menstrual cycle, but confirmation of the diagnosis depended upon pathologic study of the tumor mass, which showed endometrial glands and stroma typical of endometriosis.
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References (5)
- Endometriosis of the Perineum via openalex
- Origin of endometriosis from the mesenchyme of the celomic walls via openalex
- Peritoneal endometriosis due to the menstrual dissemination of endometrial tissue into the peritoneal cavity via openalex
- W600585651 via openalex
- W1520602715 via openalex
Cited by (6)
- Perianal endometrioma presented as perianal abscess: report of two cases 2024
- Diagnosis and Treatment of Vulvo-Perineal Endometriosis: A Systematic Review 2021
- Use of anal endosonography in diagnosis of endometriosis of the external anal sphincter 1999
- Endometriosis in episiotomy scar with anal sphincter involvement 1991
- Perianal endometrioma 1976
- Endometrioma masquerading as an anorectal abscess 1975
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- europepmc
- last seen: 2026-06-04T01:30:01.192114+00:00
- openalex
- last seen: 2026-06-10T17:14:06.276822+00:00
- pubmed
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- unpaywall
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