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[Intracranial hemorrhage caused by metastatic brain tumors (author's transl)]
Insights
Metastatic brain tumors can mimic stroke symptoms and appear as high-density areas on CT scans, complicating preoperative diagnosis. This study highlights characteristic CT findings in three such cases, aiding in differentiating these tumors from actual vascular events.
Area of Science:
- Neurology
- Radiology
- Oncology
Background:
- Metastatic brain tumors can present with stroke-like symptoms.
- Accurate preoperative diagnosis is often challenging.
- Computed tomography (CT) scans may show intracranial high-density areas.
Observation:
- Three cases of metastatic brain tumors mimicking vascular accidents were observed.
- Two cases involved lung cancer metastasis, and one involved hepatoma.
- CT scans revealed high-density areas consistent with tumors.
Findings:
- Characteristic CT findings included atypical tumor location, non-homogeneous high density with marginal enhancement (sometimes ring-like), surrounding edema, positive contrast enhancement, and multiple lesions.
- Two cases showed recurrence on early postoperative CT scans.
- Tumor cell dissemination within a hematoma was suspected as the cause of recurrence.
Implications:
- Recognizing these CT characteristics can improve the preoperative diagnosis of metastatic brain tumors.
- Understanding recurrence patterns informs surgical and postoperative management strategies.
- This study contributes to the differential diagnosis of intracranial high-density lesions.
Abstract:
Metastatic brain tumors are known to produce the symptoms of stroke and intracranial high density areas are demonstrated by CT scan. But exact preoperative diagnosis is sometimes difficult. Recently, we have experienced three cases of metastatic brain tumors which began with the symptoms of vascular accident and were demonstrated as high density area by CT scan. Two of them are metastasis of lung cancer and another, hepatoma. Characteristic CT findings are as follow: 1) atypical location 2) non-homogeneous high density area extending from the margin of the tumor (sometimes ring-like appearance) 3) surrounding massive edema 4) positive contrast enhancement 5) multiple lesions Two of our cases were demonstrated the recurrence by CT scan which was performed at earlier postoperative stage. The dissemination of tumor cells in the hematoma was thought to be the main factor of it. We also discussed the operative procedures and the postoperative care.