Angiography before and after radiotherapy for a thalamic tumor

Area of Science:

• Neurology
• Radiology
• Oncology

Background:

• Thalamic tumors are rare intracranial neoplasms.
• Radiotherapy is a common treatment modality for brain tumors.
• Cerebral angiography is an imaging technique used to visualize blood vessels in the brain.

Observation:

• A patient with a thalamic tumor underwent radiotherapy.
• Seven days post-irradiation, a right cerebral angiogram showed increased vascularity, early filling of deep cerebral veins, and signs of increased mass.
• A follow-up angiogram demonstrated a gradual regression of these observed features.

Findings:

• The patient exhibited transient angiographic evidence of increased vascularity and mass effect following radiotherapy.
• Early venous filling of deep cerebral veins was a notable observation.
• This specific pattern of post-radiotherapy angiographic changes, including early venous filling, has not been previously reported in medical literature.

Implications:

• This case highlights a potential, albeit temporary, imaging finding after radiotherapy for thalamic tumors.
• The observation of early venous filling may warrant further investigation in similar cases.
• This unique case contributes to the understanding of rare post-treatment imaging manifestations in neuro-oncology.