Synonyms

• BNCT
• Benign notochordal remnant

Category

Bone

Behaviour

Benign

Gender

Both equally

Tissue of Origin

Other

Epidemiology

• Benign notochordal remnant
• Found incidentally on imaging
• Clival and sacral regions

Clinical Features

• Usually asymptomatic
• Incidental finding

Location

• Clivus (basisphenoid)
• Sacrum
• Spine midline

Imaging

• CT: well-defined lytic lesion
• MRI: T1 Low, T2 bright

Pathology

• Benign notochordal epithelium
• No Malignant features

Genetics

Developmental anomaly

Treatment

• Observation is standard
• Excision only if symptomatic

Prognosis

• Excellent - Benign
• Does not transform to chordoma

Key Points

• Benign notochordal remnant
• Observation appropriate

Workup - Blood Tests

No blood tests required

Workup - Local Imaging

CT and MRI for characterisation

Workup - Biopsy

Biopsy if malignancy concern

Workup - Staging

No staging required