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Indian J Radiol Imaging. 2019 Oct-Dec;29(4):457-461. doi: 10.4103/ijri.IJRI_366_19. Epub 2019 Dec 31.

Perineal scar endometriosis.

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Department of Radiology and Imaging Sciences, Meenakshi Hospital, Tanjore, Tamil Nadu, India.
Department of Gynecology, Meenakshi Hospital, Tanjore, Tamil Nadu, India.
Department of Pathology, Meenakshi Hospital, Tanjore, Tamil Nadu, India.


Endometriosis is defined as the presence of ectopic endometrial tissue outside the uterine cavity. It is a benign condition commonly observed in women of the reproductive age group. It can occur in both pelvic and extra-pelvic sites. Moreover, pelvic endometriosis is relatively common, as compared to extra-pelvic endometriosis. The most frequent site for pelvic endometriosis is ovary. It can also affect rectum, uterosacral ligaments, rectovaginal septum, urinary bladder. Extra-pelvic endometriosis is rare and when it occurs, does so more frequently in surgical scar sites, especially in caesarean section scar. Endometriosis in an episiotomy scar is extremely rare but can lead to significant morbidity in patients due to local infiltration. This condition can be diagnosed by the presence of the classical clinical triad of history of episiotomy, tender nodule at the scar site and cyclical pain. Magnetic resonance imaging (MRI) is a very useful imaging modality to diagnose and assess the deeper extension of the lesion. Herein, we report one such case of episiotomy scar endometriosis in the perineum.


Episiotomy scar endometriosis; perineal scar endometriosis; scar endometriosis

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