270508006: Pathological fracture of lumbar vertebra (disorder)

SNOMED CT Concept\Clinical finding (finding)\...

\Finding of back (finding)\Finding of spinal region\Disorder of spinal region (disorder)\Injury of vertebral column region (disorder)\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Finding of spinal region\Disorder of spinal region (disorder)\Injury of vertebral column region (disorder)\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Finding of spinal region\Disorder of spinal region (disorder)\Injury of vertebral column region (disorder)\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Finding of spinal region\Disorder of spinal region (disorder)\Disorder of vertebral column (disorder)\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Finding of spinal region\Disorder of spinal region (disorder)\Disorder of vertebral column (disorder)\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Finding of spinal region\Disorder of spinal region (disorder)\Disorder of vertebral column (disorder)\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Finding of spinal region\Disorder of spinal region (disorder)\Disorder of lumbar spine\Lesion of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Finding of spinal region\Disorder of spinal region (disorder)\Disorder of lumbar spine\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Finding of spinal region\Vertebral column finding\Disorder of vertebral column (disorder)\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Finding of spinal region\Vertebral column finding\Disorder of vertebral column (disorder)\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Finding of spinal region\Vertebral column finding\Disorder of vertebral column (disorder)\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Finding of spinal region\Vertebral column finding\Finding of vertebra\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Finding of spinal region\Vertebral column finding\Finding of vertebra\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Finding of spinal region\Finding of lumbar spine\Disorder of lumbar spine\Lesion of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Finding of spinal region\Finding of lumbar spine\Disorder of lumbar spine\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Disorder of back\Injury of back\Injury of back of trunk\Lower back injury\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Disorder of back\Injury of back\Injury of vertebral column region (disorder)\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Disorder of back\Injury of back\Injury of vertebral column region (disorder)\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Disorder of back\Injury of back\Injury of vertebral column region (disorder)\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Disorder of back\Disorder of spinal region (disorder)\Injury of vertebral column region (disorder)\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Disorder of back\Disorder of spinal region (disorder)\Injury of vertebral column region (disorder)\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Disorder of back\Disorder of spinal region (disorder)\Injury of vertebral column region (disorder)\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Disorder of back\Disorder of spinal region (disorder)\Disorder of vertebral column (disorder)\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Disorder of back\Disorder of spinal region (disorder)\Disorder of vertebral column (disorder)\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Disorder of back\Disorder of spinal region (disorder)\Disorder of vertebral column (disorder)\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Disorder of back\Disorder of spinal region (disorder)\Disorder of lumbar spine\Lesion of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of back (finding)\Disorder of back\Disorder of spinal region (disorder)\Disorder of lumbar spine\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra

\Finding of trunk structure\Finding of abdominopelvic segment of trunk (finding)\Disorder of abdominopelvic segment of trunk\Lower back injury\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of trunk structure\Finding of abdominopelvic segment of trunk (finding)\Disorder of abdominopelvic segment of trunk\Disorder of lumbar spine\Lesion of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of trunk structure\Finding of abdominopelvic segment of trunk (finding)\Disorder of abdominopelvic segment of trunk\Disorder of lumbar spine\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of trunk structure\Finding of abdominopelvic segment of trunk (finding)\Finding of lumbar spine\Disorder of lumbar spine\Lesion of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of trunk structure\Finding of abdominopelvic segment of trunk (finding)\Finding of lumbar spine\Disorder of lumbar spine\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of trunk structure\Disorder of trunk (disorder)\Disorder of abdominopelvic segment of trunk\Lower back injury\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of trunk structure\Disorder of trunk (disorder)\Disorder of abdominopelvic segment of trunk\Disorder of lumbar spine\Lesion of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of trunk structure\Disorder of trunk (disorder)\Disorder of abdominopelvic segment of trunk\Disorder of lumbar spine\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of trunk structure\Disorder of trunk (disorder)\Injury of trunk\Injury of back of trunk\Lower back injury\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Finding of trunk structure\Disorder of trunk (disorder)\Injury of trunk\Fracture of bones of trunk\Fracture of lumbar spine\Pathological fracture of lumbar vertebra

\Musculoskeletal finding\Vertebral column finding\Disorder of vertebral column (disorder)\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Vertebral column finding\Disorder of vertebral column (disorder)\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Vertebral column finding\Disorder of vertebral column (disorder)\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Vertebral column finding\Finding of vertebra\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Vertebral column finding\Finding of vertebra\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Bone finding\Finding of vertebra\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Bone finding\Finding of vertebra\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Bone finding\Disorder of bone (disorder)\Bone injury\Fracture of bone\Pathological fracture\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Bone finding\Disorder of bone (disorder)\Bone injury\Fracture of bone\Fracture of lumbar spine and/or pelvis (disorder)\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Bone finding\Disorder of bone (disorder)\Bone injury\Fracture of bone\Fracture of bones of trunk\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Bone finding\Disorder of bone (disorder)\Bone injury\Fracture of bone\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Bone finding\Disorder of bone (disorder)\Bone injury\Fracture of bone\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Disorder of musculoskeletal system\Injury of musculoskeletal system\Bone injury\Fracture of bone\Pathological fracture\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Disorder of musculoskeletal system\Injury of musculoskeletal system\Bone injury\Fracture of bone\Fracture of lumbar spine and/or pelvis (disorder)\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Disorder of musculoskeletal system\Injury of musculoskeletal system\Bone injury\Fracture of bone\Fracture of bones of trunk\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Disorder of musculoskeletal system\Injury of musculoskeletal system\Bone injury\Fracture of bone\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Disorder of musculoskeletal system\Injury of musculoskeletal system\Bone injury\Fracture of bone\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Disorder of musculoskeletal system\Injury of musculoskeletal system\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of vertebral column (disorder)\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of vertebral column (disorder)\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of vertebral column (disorder)\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of bone (disorder)\Bone injury\Fracture of bone\Pathological fracture\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of bone (disorder)\Bone injury\Fracture of bone\Fracture of lumbar spine and/or pelvis (disorder)\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of bone (disorder)\Bone injury\Fracture of bone\Fracture of bones of trunk\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of bone (disorder)\Bone injury\Fracture of bone\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Musculoskeletal finding\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of bone (disorder)\Bone injury\Fracture of bone\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra

\Disease\Traumatic or non-traumatic injury (disorder)\Injury of back\Injury of back of trunk\Lower back injury\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Traumatic or non-traumatic injury (disorder)\Injury of back\Injury of vertebral column region (disorder)\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Traumatic or non-traumatic injury (disorder)\Injury of back\Injury of vertebral column region (disorder)\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Disease\Traumatic or non-traumatic injury (disorder)\Injury of back\Injury of vertebral column region (disorder)\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Traumatic or non-traumatic injury (disorder)\Injury of musculoskeletal system\Bone injury\Fracture of bone\Pathological fracture\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Disease\Traumatic or non-traumatic injury (disorder)\Injury of musculoskeletal system\Bone injury\Fracture of bone\Fracture of lumbar spine and/or pelvis (disorder)\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Traumatic or non-traumatic injury (disorder)\Injury of musculoskeletal system\Bone injury\Fracture of bone\Fracture of bones of trunk\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Traumatic or non-traumatic injury (disorder)\Injury of musculoskeletal system\Bone injury\Fracture of bone\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Disease\Traumatic or non-traumatic injury (disorder)\Injury of musculoskeletal system\Bone injury\Fracture of bone\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Traumatic or non-traumatic injury (disorder)\Injury of musculoskeletal system\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Traumatic or non-traumatic injury (disorder)\Injury of trunk\Injury of back of trunk\Lower back injury\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Traumatic or non-traumatic injury (disorder)\Injury of trunk\Fracture of bones of trunk\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of body system\Disorder of musculoskeletal system\Injury of musculoskeletal system\Bone injury\Fracture of bone\Pathological fracture\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Disease\Disorder of body system\Disorder of musculoskeletal system\Injury of musculoskeletal system\Bone injury\Fracture of bone\Fracture of lumbar spine and/or pelvis (disorder)\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of body system\Disorder of musculoskeletal system\Injury of musculoskeletal system\Bone injury\Fracture of bone\Fracture of bones of trunk\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of body system\Disorder of musculoskeletal system\Injury of musculoskeletal system\Bone injury\Fracture of bone\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Disease\Disorder of body system\Disorder of musculoskeletal system\Injury of musculoskeletal system\Bone injury\Fracture of bone\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of body system\Disorder of musculoskeletal system\Injury of musculoskeletal system\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of body system\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of vertebral column (disorder)\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of body system\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of vertebral column (disorder)\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Disease\Disorder of body system\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of vertebral column (disorder)\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of body system\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of bone (disorder)\Bone injury\Fracture of bone\Pathological fracture\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Disease\Disorder of body system\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of bone (disorder)\Bone injury\Fracture of bone\Fracture of lumbar spine and/or pelvis (disorder)\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of body system\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of bone (disorder)\Bone injury\Fracture of bone\Fracture of bones of trunk\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of body system\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of bone (disorder)\Bone injury\Fracture of bone\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Disease\Disorder of body system\Disorder of musculoskeletal system\Disorder of skeletal system\Disorder of bone (disorder)\Bone injury\Fracture of bone\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of trunk (disorder)\Disorder of abdominopelvic segment of trunk\Lower back injury\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of trunk (disorder)\Disorder of abdominopelvic segment of trunk\Disorder of lumbar spine\Lesion of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of trunk (disorder)\Disorder of abdominopelvic segment of trunk\Disorder of lumbar spine\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of trunk (disorder)\Injury of trunk\Injury of back of trunk\Lower back injury\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of trunk (disorder)\Injury of trunk\Fracture of bones of trunk\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of back\Injury of back\Injury of back of trunk\Lower back injury\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of back\Injury of back\Injury of vertebral column region (disorder)\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of back\Injury of back\Injury of vertebral column region (disorder)\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Disease\Disorder of back\Injury of back\Injury of vertebral column region (disorder)\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of back\Disorder of spinal region (disorder)\Injury of vertebral column region (disorder)\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of back\Disorder of spinal region (disorder)\Injury of vertebral column region (disorder)\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Disease\Disorder of back\Disorder of spinal region (disorder)\Injury of vertebral column region (disorder)\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of back\Disorder of spinal region (disorder)\Disorder of vertebral column (disorder)\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of back\Disorder of spinal region (disorder)\Disorder of vertebral column (disorder)\Fracture of vertebral column\Pathological fracture of vertebra\Pathological fracture of lumbar vertebra
\Disease\Disorder of back\Disorder of spinal region (disorder)\Disorder of vertebral column (disorder)\Fracture of vertebral column\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of back\Disorder of spinal region (disorder)\Disorder of lumbar spine\Lesion of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra
\Disease\Disorder of back\Disorder of spinal region (disorder)\Disorder of lumbar spine\Injury of lumbar spine\Fracture of lumbar spine\Pathological fracture of lumbar vertebra

Status: current, Sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jul 2004. Module: SNOMED CT core

Descriptions:

Id Description Lang Type Status Case? Module

405144016 Pathological fracture of lumbar vertebra en Synonym (core metadata concept) Active Entire term case insensitive (core metadata concept) SNOMED CT core

663141011 Pathological fracture of lumbar vertebra (disorder) en Fully specified name Active Entire term case insensitive (core metadata concept) SNOMED CT core

Expanded Value Set

Outbound Relationships	Type	Target	Active	Characteristic	Refinability	Group	Values
Pathological fracture of lumbar vertebra	Is a	Fracture of lumbar spine	true	Inferred relationship	Some
Pathological fracture of lumbar vertebra	Is a	Pathological fracture of vertebra	true	Inferred relationship	Some
Pathological fracture of lumbar vertebra	Associated morphology	Fracture	false	Inferred relationship	Some	1
Pathological fracture of lumbar vertebra	Finding site	Bone structure of spine	false	Inferred relationship	Some	1
Pathological fracture of lumbar vertebra	Finding site	Bone structure of lumbar vertebra	false	Inferred relationship	Some	1
Pathological fracture of lumbar vertebra	Associated morphology	Pathologic fracture	false	Inferred relationship	Some	1
Pathological fracture of lumbar vertebra	Associated morphology	Pathologic fracture	true	Inferred relationship	Some	1
Pathological fracture of lumbar vertebra	Finding site	Bone structure of lumbar vertebra	true	Inferred relationship	Some	1

Inbound Relationships	Type	Active	Source	Characteristic	Refinability	Group
Osteoporotic fracture of lumbar vertebra	Is a	False	Pathological fracture of lumbar vertebra	Inferred relationship	Some
Secondary osteoporotic fracture of lumbar vertebra	Is a	False	Pathological fracture of lumbar vertebra	Inferred relationship	Some
Pathologic fracture of lumbar vertebra at site of neoplasm	Is a	True	Pathological fracture of lumbar vertebra	Inferred relationship	Some

Reference Sets