1. Vertebral Metastases vs. Hemangioma
Hemangioma of spine
It is a benign condition.
Commonly incidental
The common sites of involvement are lower thoracic and upper lumbar vertebrae.
It is usually asymptomatic and is more frequently seen in women.
Appearance of Hemangioma in MRI
Bright on T1 and T2 (but dark with fat suppression) Enhancement variable

2. Metastases
It is a pathogenic agent's spread from an initial or primary site to a different or secondary site within the host's body, yet is typically spoken of as such spread by a cancerous tumor.
The newly pathological sites, then, are metastases
Appearance of Metastases in MRI
Dark on T1, Bright on T2 (even with fat suppression)

3. Vertebral Hemangiomas

4. Extradural: Vertebral Metastases
Diffusely T1-hypointense marrow signal may represent widespread vertebral metastases as in this patient with prostate Ca
This can also be seen in the setting of anemia, myeloproliferative disease, and various other chronic disease states

5. Extradural: Vertebral Metastases

6. Extradural: Epidural Abscess

7. Extradural: Nerve Sheath Tumor (Schwannoma) appearance

8. Intradural Extramedullary: Meningioma

9. Intradural Extramedullary: “Drop Mets”
T T T1+C