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[Calcified cerebral metastasis]
1Servicio de Radiodiagnóstico. Hospital Clínico San Carlos. Madrid. España. lu_rx@hotmail.com
Insights
A rare, fully calcified brain metastasis mimicked acute hemorrhage on initial CT scans. This case highlights the importance of considering metastatic disease even with extensive calcification, which is unusual for brain tumors.
Area of Science:
- Neurology
- Radiology
- Oncology
Background:
- Hyperdense lesions on cerebral computed tomography (CT) typically indicate acute hematoma.
- Focal brain calcifications are often linked to granulomas or tumors.
- Cerebral metastases are the most frequent intracranial neoplasms, but calcification is rare (approx. 1%).
Observation:
- A case involving a completely calcified cerebral metastasis was studied.
- Imaging modalities used included CT and magnetic resonance imaging (MRI).
- Initial CT interpretation suggested acute hemorrhage.
Findings:
- The lesion was a fully calcified cerebral metastasis.
- CT and MRI findings were analyzed.
- The initial interpretation of acute hemorrhage was re-evaluated.
Implications:
- This case underscores the need to consider metastatic causes for hyperdense brain lesions, even when calcified.
- Extensive calcification is an atypical feature for cerebral metastases, challenging initial diagnoses.
- Advanced imaging (CT/MRI) is crucial for differentiating metastatic lesions from other intracranial pathologies.
Abstract:
A hyperdense intraparenchymal lesion on a cerebral computed tomography (CT) usually corresponds to an acute hematoma; however, it is sometimes necessary to rule out a metastatic cause. Focal calcifications in the brain are common and are most often due to granulomas (tuberculosis, cysticercosis...), hamartomas, and primary brain tumors. Cerebral metastases are the most common intracranial neoplasm; however, their rate of calcification in classic series is only approximately 1%. We report the case of a completely calcified cerebral metastasis studied by CT and magnetic resonance imaging (MRI) that was interpreted as acute hemorrhage on the first CT examination.
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