A solid lung mass is a large, dense lesion in the lung, typically
measuring more than 3 cm in diameter, seen on chest X-rays or CT
scans. Unlike smaller nodules, a lung mass has a higher likelihood
of being malignant, though it can also be benign. Common causes
of solid lung masses include primary lung cancer, metastatic
tumors (spreading from other parts of the body), benign tumors
(such as hamartomas), infections (like tuberculosis or fungal
abscesses), and inflammatory conditions (such as granulomas).
The pathogenesis varies widely; for instance, malignancies arise
from uncontrolled cell growth, while benign masses may form due
to localized overgrowth of tissue or infection-related inflammation.
Diagnosis involves assessing the shape, margins, and
characteristics of the mass on imaging, and further evaluation
through biopsy, PET scans, or bronchoscopy to determine if it is
cancerous. Given the potential for malignancy, solid lung masses
often warrant prompt diagnostic investigation and appropriate
management.
