title: Intramedullary schwannoma of the conus medullaris complicated by dense adhesion to neural tissue.
abstract: A 29-year-old man presented with an intramedullary schwannoma of the conus medullaris manifesting as an 8-month history of mild bladder dysfunction, sexual impotence, and paresthesia in the buttocks. Subtotal removal of the lesion was achieved, as part of the tumor showed dense adhesion to the rostral neural tissue, with only postoperative transient deterioration of bladder dysfunction. Intramedullary schwannoma, especially involving the conus medullaris and the proximal spinal cord, is relatively rare and the pathogenesis and pathophysiology are unclear. Complete resection is often advised to avoid recurrence, but tumor adhesion to neural tissue sometimes renders complete resection difficult, and may create the risk of unacceptable operative morbidity. The present case shows that transient neurological deterioration may occur even with just subtotal removal, leaving the adherent part. Therefore, recognition of the particular features and the strategy for treatment in intramedullary schwannoma of the conus medullaris is essential for making appropriate decisions on the degree of removal.
authors: Department of Spinal Surgery, Brain Attack Center Ota Memorial Hospital, Okinogami-cho, Fukuyama, Hiroshima, Japan. ohtonari@shouwa.or.jp
authors: Tatsuya
authors: T
authors: Ohtonari
authors: Nobuharu
authors: N
authors: Nishihara
authors: Taisei
authors: T
authors: Ota
authors: Shinzo
authors: S
authors: Ota
authors: Tsunemaro
authors: T
authors: Koyama
mesh_terms: D000328:Adult; D014408:Biomarkers, Tumor / Q000032:analysis / Q000378:metabolism; D019299:Decompression, Surgical; D018450:Disease Progression; D007172:Erectile Dysfunction / Q000209:etiology; D006801:Humans; D007796:Laminectomy; D008159:Lumbar Vertebrae / Q000473:pathology / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D009361:Neoplasm Invasiveness / Q000473:pathology / Q000503:physiopathology; D009442:Neurilemmoma / Q000150:complications / Q000473:pathology* / Q000601:surgery; D019635:Neurosurgical Procedures; D010292:Paresthesia / Q000209:etiology; D011183:Postoperative Complications / Q000209:etiology / Q000503:physiopathology / Q000517:prevention & control; D013115:Spinal Canal / Q000473:pathology / Q000601:surgery; D013116:Spinal Cord / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D013117:Spinal Cord Compression / Q000209:etiology / Q000473:pathology* / Q000503:physiopathology; D013120:Spinal Cord Neoplasms / Q000150:complications / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome; D001750:Urinary Bladder, Neurogenic / Q000209:etiology
chemical_list: D014408:Biomarkers, Tumor