Abdominal wall endometriosis (AWE): Two case reports and literature review

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INTRODUCTION AND IMPORTANCE: Endometriosis is one of the most frequent gynecologic disorders, clinically confirmed or suspected in one of nine women by the age of 44 years. Its location of occurrence can be classified into intra and extra pelvic. Abdominal wall endometriosis (AWE) is one of its rare location, with frequency of 0.04 to 5.5 %. Furthermore there are only a few cases of AWE in Indonesia that have been reported. CASE PRESENTATION: Here we present two Indonesian patients at a General Hospital in Tangerang, Indonesia. The first patient, 26 years old, complained of an umbilical mass 2 years after caesarean section. The second patient, 36 years old, complained of an umbilical mass since 8 months, with no history of prior surgery. Both patients had pre-operative ultrasonography (US) and underwent wide local excision. Histopathology examination with presence of endometrial glandular components and endometrial-like stroma confirmed the diagnosis of AWE. CLINICAL DISCUSSION: AWE is defined as any endometrial tissue found superficial to the peritoneum, locating most commonly at umbilical, inguinal area, and anterior abdominal wall. Pre-operative diagnostic tools include abdominal ultrasonography (US) or abdominopelvic computed tomography (CT) scan. Since treatment with medications is usually not effective, surgical treatment is recommended, along with confirmation by histopathological examination. CONCLUSION: Diagnosis of AWE should be suspected in all women with symptoms of an abdominal mass and cyclic pain, especially if the patient had history of surgery at the abdominal region. AWE is quite rare, but its symptoms can affect quality of life. Hence, a multi-disciplinary approach is necessary, with the strongly recommended treatment of wide local excision to prevent recurrence and malignant transformation.

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