Isolated Bladder Endometriosis in a Patient With Previous Cesarean Sections

Chye Lee Kho Lily, Charissa Goh, Yong Kuei Lim


Urological endometriosis is rare and accounts for approximately 1% of women with endometriosis. The pathophysiology of bladder endometriosis may be divided into two different causes, namely primary and secondary. The primary form occurs spontaneously and manifests in a form of a generalized pelvic disease whereas the secondary form is thought to be iatrogenic and typically occurs after pelvic surgery such as Cesarean section or hysterectomy. We present a case report on a patient presenting with an invasive bladder mass initially thought to be from a pelvic malignancy. The final histology showed isolated bladder endometriosis. She had a significant past medical history of two previous Cesarean sections. A review of her magnetic resonance imaging (MRI) images demonstrated the presence of a Cesarean scar niche which may be linked to her bladder endometriosis. There is a need to improve awareness of the possible link between Cesarean scar niche with bladder endometriosis. This is important as it raises the clinical question of whether appropriate repair of Cesarean scar niches canprevent future complications such as bladder endometriosis which can potentially be associated with significant morbidity.

J Med Cases. 2020;11(11):370-373


Bladder endometriosis; Cesarean scar niche; Rare cases

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