Endometriosis externa within the rectus abdominis muscle
Hatice Karaman1, Feridun Bulut2, Aysel Özaşlamacı3
1Clinic of Pathology, Kayseri Training and Research Hospital, Kayseri, Turkey.
Ulusal Cerrahi Dergisi
|May 2, 2015
Summary
Endometriosis externa, the abnormal growth of endometrial tissue outside the uterus, is rare in the rectus abdominis muscle. This case report details a rare instance of rectus abdominis endometriosis in a patient with a history of cesarean sections.
Area of Science:
- Gynecology
- Surgical Pathology
Background:
- Endometriosis is defined as the presence of endometrial glands and stroma outside the uterine cavity.
- While most commonly found in the pelvis, extrapelvic endometriosis can occur in nearly any organ.
- Endometriosis of the rectus abdominis muscle is an exceptionally rare presentation.
Observation:
- A patient with a history of two cesarean sections presented with a palpable mass.
- Imaging revealed a 23 mm heterogeneous hypoechoic mass in the rectus abdominis muscle, near a previous Pfannenstiel incision.
Findings:
- Both fine-needle aspiration biopsy and excisional biopsy confirmed the diagnosis of endometriosis externa.
- Histopathological examination identified endometrial glands and stroma within the rectus abdominis muscle.
Implications:
- This case highlights the importance of considering rare diagnoses in patients with specific surgical histories.
- Accurate diagnosis through biopsy is crucial for appropriate management of extrapelvic endometriosis.
- Further literature review on rectus abdominis endometriosis is warranted to understand its pathogenesis and clinical behavior.
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