You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["HealthCareActivity", "InjuryOrPoisoning", "BodySubstance", "IntellectualProduct", "AnatomicalStructure", "SpatialConcept", "Chemical", "Bacterium", "MedicalDevice", "Organization", "BiomedicalOccupationOrDiscipline", "Finding", "BiologicFunction", "Virus", "ResearchActivity", "ClinicalAttribute", "PopulationGroup", "Eukaryote", "BodySystem", "Food", "ProfessionalOrOccupationalGroup"].

Please return the output as a JSON object of the format: {"Virus": ["HIV", ...], "Bacterium": ["MRSA", ...], "AnatomicalStructure": ["Lung", ...], "BodySystem": ["CNS", ...], "BodySubstance": ["Serum", ...], "Finding": ["Headache", ...], "InjuryOrPoisoning": ["Fracture", ...], "BiologicFunction": ["Death", ...], "HealthCareActivity": ["Biopsy", ...], "ResearchActivity": ["Clinical trial", ...], "MedicalDevice": ["Lenses", ...], "SpatialConcept": ["Camps", ...], "BiomedicalOccupationOrDiscipline": ["Forensic medicine", ...], "Organization": ["WHO", ...], "ProfessionalOrOccupationalGroup": ["Provider", ...], "PopulationGroup": ["Swimmers", ...], "Chemical": ["Gold", ...], "Food": ["Rice", ...], "IntellectualProduct": ["RPAM", ...], "ClinicalAttribute": ["Biomarker", ...], "Eukaryote": ["Dogs", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

Neurological Decline in an Elderly with Repaired Myelomeningocele Complicated with Lumbar Canal Stenosis: a case report Tethered cord syndrome is a well-known complication after myelomeningocele (MMC) repair in childhood. However, late complications in adults with a repaired MMC are not well understood. In particular, the influence of a degenerative spinal deformity on a sustained tethered cord is still unclear. A 63-year-old man with a repaired MMC presented with a progressive gait disturbance and numbness in both lower limbs. Magnetic resonance images demonstrated that the tethered spinal cord was compressed by severe canal stenosis along the entire lumbar spine. After a multi-level lumbar decompression surgery, the patient recovered to baseline neurological status. In adults with a repaired MMC, lumbar canal stenosis should be investigated as a possible cause of late neurological decline. Clinical manifestations may be complicated by the coexistence of both the original and subsequent neurological disorders. Because these additional disorders result from compressive myelopathy, early surgical decompression is indicated to avoid irreversible spinal cord dysfunction.
{"AnatomicalStructure": ["lower limbs", "myelomeningocele", "degenerative spinal deformity", "Myelomeningocele", "MMC"], "Bacterium": [], "BiologicFunction": ["disorders", "spinal cord dysfunction", "Tethered cord syndrome", "canal stenosis", "compressive myelopathy", "complication", "lumbar canal stenosis", "Lumbar Canal Stenosis", "complications", "neurological disorders"], "BiomedicalOccupationOrDiscipline": [], "BodySubstance": [], "BodySystem": [], "Chemical": [], "ClinicalAttribute": [], "Eukaryote": [], "Finding": ["numbness", "progressive gait disturbance", "Neurological Decline", "tethered cord", "tethered spinal cord", "neurological decline"], "Food": [], "HealthCareActivity": ["surgical decompression", "multi-level lumbar decompression", "surgery", "repair"], "InjuryOrPoisoning": [], "IntellectualProduct": ["case report", "Magnetic resonance images"], "MedicalDevice": [], "Organization": [], "PopulationGroup": ["Elderly"], "ProfessionalOrOccupationalGroup": [], "ResearchActivity": [], "SpatialConcept": ["entire lumbar spine"], "Virus": []}