A 34-year-old woman with peri-anal pain and swelling was operated in the emergency setting assuming a diagnosis of a perianal abscess. No pus was revealed. Later magnetic resonance imaging (MRI) suggested induration and a mass effect in the peri-anal region. Examination under anaesthesia was repeated which revealed a mobile but firm mass. Histology from trucut biopsies diagnosed it as a peri-anal endometrioma arising from an episiotomy scar. Peri-anal endometrioma can rarely developin episiotomy scars and can be easily mistaken as an abscess by junior surgeons.
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A 34-year-old woman with peri-anal pain and swelling was operated in the emergency setting assuming a diagnosis of a perianal abscess. No pus was revealed. Later magnetic resonance imaging (MRI) suggested induration and a mass effect in the peri-anal region.
View Article and Find Full Text PDFClin Radiol
August 1994
Department of Radiology, Madigan Army Medical Center, Tacoma, Washington 98431-5000.
Endometriosis is a common clinical entity, and is found in approximately 15% of menstruating females. An endometrioma is somewhat less common, and is defined as functioning endometrial tissue outside the uterus. Endometriomas have been reported in a variety of different locations, including the rectus abdominis muscle following Caesarean section, skin and tissues adjacent to surgical scars, and even abdominal wall endometrial implants at the site of needle passage for amniocentesis.
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