• Nikhil K Murthy, Charles D Sturgis, Kimberly K Amrami, and Robert J Spinner.
• Department of Neurosurgery, Mayo Clinic, Rochester, Minnesota, USA.
• World Neurosurg. 2020 Sep 1; 141: 323-326.

BackgroundAdenocarcinomas of müllerian origin are malignancies derived from tissues of the proximal third of the vagina, cervix, uterus, and fallopian tubes. These organs develop from the embryologic müllerian ducts. While reports of perineural spread of certain uterine and cervical carcinomas exist in the literature, to our knowledge, no reports of clear cell-type müllerian adenocarcinoma presenting with neural invasion of the lumbosacral plexus exist in the literature.Case DescriptionA 77-year-old woman with a remote history of hysterectomy and bilateral salpingo-oopherectomy for benign disease presented for evaluation of foot drop. We present clinical, electromyographic, and imaging findings of her condition, which revealed a diffuse intraneural lesion of the ipsilateral lumbosacral plexus. Percutaneous biopsy of the lesion confirmed nerve infiltrating clear cell adenocarcinoma of müllerian origin.ConclusionsWe present the first case of adenocarcinoma of müllerian origin with confirmed perineural spread presenting with ipsilateral lower extremity weakness. This case illustrates the importance of recognizing potential perineural spread of gynecologic malignancies to avoid delay in treatment.Copyright © 2020 Elsevier Inc. All rights reserved.

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