'Silent' brain metastasis from lung carcinoma determined by computerized tomography

Area of Science:

• Neurology
• Oncology
• Radiology

Background:

• Lung carcinoma patients often undergo preoperative screening for metastasis.
• Neurological symptoms are typically a primary indicator for brain metastasis evaluation.

Purpose of the Study:

• To evaluate the utility of computerized tomography (CT) as a preoperative screening tool for detecting brain metastasis in neurologically asymptomatic lung carcinoma patients.

Main Methods:

• A series of 50 patients with lung carcinoma, who were neurologically asymptomatic with normal radionuclide brain scans and skull roentgenograms, underwent CT.
• Contrast substance was administered to visualize metastatic lesions.

Main Results:

• CT identified metastasis in three patients (6%), specifically in the cerebellum, occipital lobe, and corpus callosum.
• These metastatic lesions were visualized only after contrast administration.
• CT findings influenced therapeutic planning, leading to the avoidance of surgery in two patients.

Conclusions:

• Computerized tomography (CT) with contrast administration is a valuable preoperative screening tool for detecting brain metastasis in lung carcinoma patients, even in the absence of neurological symptoms.
• CT findings can significantly alter treatment strategies, potentially avoiding unnecessary surgical interventions.