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Solitary intradural extramedullary metastasis of renal cell carcinoma to the conus medullaris

We report the case of a 68-year-old man with a 6-year history of renal cell carcinoma (RCC), who presented with severe low backache and paraparesis for a month before admission. In addition, he experienced urinary retention for 2 weeks. A spinal magnetic resonance imaging scan revealed the presence of an intradural extramedullary solitary mass at the conus medullaris. We performed a laminectomy and completely excised the tumor. The histopathological findings were suggestive of spinal metastasis of RCC. After the operation, the patient did not complain of backache and urinary retention, and paraparesis improved significantly. Spinal metastases of RCC are usually extradurally located. Intradural metastases of RCC are rare. Thus far, only six cases of RCC metastasizing to the cauda equina have been reported; however, RCC metastasis to the conus medullaris has not yet been reported. Conus medullaris lesions may cause symmetrical motor and sensory deficits accompanied by early autonomic system impairment. Surgery is the treatment of choice in cases of resectable RCC metastases, especially in cases of solitary metastasis

Keywords : Aged,Carcinoma,Carcinoma,Renal Cell,complications,diagnosis,history,Humans,Laminectomy,Magnetic Resonance Imaging,Male,Neurosurgery,Paraparesis,secondary,Spinal Cord Neoplasms,surgery,, Intradural,Extramedullary,Metastasis,Renal, neck pain patient uk

Date of Publication : 2011 Jan

Authors : Lin TK;Chen SM;Jung SM;

Organisation : Department of Neurosurgery, Chang Gung Memorial Hospital at Linkou, Chang Gung University, Kweishan, Taoyuan, Taiwan. tklin100@cgmh.org.tw

Journal of Publication : Kaohsiung J Med Sci

Pubmed Link : https://www.ncbi.nlm.nih.gov/pubmed/21329893

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