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Surgical Neuropelveology: Lateral femoral cutaneous nerve endometriosis. Laparoscopic resection and nerve transplantation.

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OBJECTIVE To demonstrate the application of surgical neuroanatomic principles for the diagnosis and treatment of deep infiltrating endometriosis involving lateral femoral cutaneous nerve DESIGN: : video demonstration of laparoscopic lateral… Click to show full abstract

OBJECTIVE To demonstrate the application of surgical neuroanatomic principles for the diagnosis and treatment of deep infiltrating endometriosis involving lateral femoral cutaneous nerve DESIGN: : video demonstration of laparoscopic lateral femoral cutaneous endometriosis resection with nerve transplant. SETTING Endometriosis infiltrating somatic nerves is a poorly known condition, which can cause severe neuropathic symptoms [1] and is often unrecognized with a subsequent treatment delay [1]. Intimate knowledge of pelvic neuroanatomy and expertise in minimally invasive surgery are essential to manage this challenging surgical scenario [2-4]. INTERVENTIONS A 36-year-old patient with primary infertility and chronic pelvic pain associated to dysmenorrhea, dyspareunia, dysuria, dyschezia. Preoperative MRI detected a 3 cm parauterine and 2 cm retrocervical endometetriosis nodules.  MRI did not demonstrate pelvic nerves involvement. Preoperative neuropelveological assessment demonstrated a significant hypoesthesia of the corresponding lateral femoral cutaneous nerve (LFCN) dermatome, representing the primary complaint. The swab-test showed spotting areas of allodynia. These findings prompted us to investigate for a right lateral femoral cutaneous entrapment. Laparoscopy showed an endometriosis nodule infiltrating right lateral femoral cutaneous nerve. A resection of the nerve was necessary and a subsequent reconstruction with a collagen bovine neuro-guide was carried out. The operative time was 300 minutes and the estimated blood was 150 mL. Hospital stay was 3 days. After three months the patient showed a clinical improvement in the pain and hypoesthesia on the reconstructed nerve dermatome. CONCLUSION Neuro-pelvic anatomical assessment should be considered during the pre-operative evaluation for endometriosis patients with pelvic pain and neuropathy as part of the diagnostic process [5]. This unique case demonstrates that nerve resection and transplantation can be used in specific situations for neuropathy related to deep infiltrative endometriosis of pelvic nerves.

Keywords: endometriosis; femoral cutaneous; nerve; cutaneous nerve; lateral femoral; resection

Journal Title: Journal of minimally invasive gynecology
Year Published: 2021

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