Paraparesis, SpasticParaparesis, Tropical SpasticParaparesisHuman T-lymphotropic virus 1HTLV-I InfectionsSpastic Paraplegia, HereditaryGene Products, taxHTLV-I AntibodiesParaplegiaSpinal Cord DiseasesMuscle SpasticityProvirusesCarrier StateSkin Diseases, ViralReflex, BabinskiLeukemia-Lymphoma, Adult T-CellGenes, pXMartiniqueDeltaretrovirus AntibodiesJamaicaBrachial Plexus NeuritisManihotDeltaretrovirus InfectionsHTLV-II InfectionsNeopterinDeltaretrovirus AntigensViral LoadHTLV-I AntigensPedigreeHematoma, Epidural, SpinalHuman T-lymphotropic virus 2Leukocytes, MononuclearSpinal Cord IschemiaLaminectomyThoracic VertebraeSpinal CordMagnetic Resonance ImagingEpidural SpaceSpinal Cord CompressionParalysisGene Products, rexCerebral PalsyLigamentum FlavumDNA, ViralPolyradiculopathyDecompression, SurgicalLipomatosisRetroviridae Proteins, OncogenicPolymerase Chain ReactionSpinal Cord NeoplasmsMyelitisGenes, DominantAortic Aneurysm, ThoracicMolecular Sequence DataParesisNeurologic ExaminationBase SequenceMyelitis, TransverseCD8-Positive T-LymphocytesGene Products, envSpinal Cord Vascular DiseasesCD4-Positive T-LymphocytesCisterna MagnaHematoma, Subdural, Spinal