Brief Notes on X-ray Films, July 19, 1990

Brief Notes on X-ray Films, July 19, 1990

Spherical shadows with a diameter of 3 cm or more are often lung cancer. Shadows located at the pulmonary hilum or surrounding areas typically affect the anterior segment of the upper lobe, the right middle lobe, or the left lingular lobe, with patients generally older, most over 40 years of age. Characteristics include: 92% of tumors exhibit lobulation, 71% have spiculated margins, and 10% show intratumoral cavities, mostly squamous cell carcinoma. Cavity characteristics: ① eccentric location; ② thick walls; ③ uneven wall thickness—only a few have fluid levels. Spherical masses less than 3 cm are usually tuberculous nodules: smooth surface, no lobulation, presence of calcifications, predominantly affecting the upper lobe, and occurring in younger patients. Hamartomas, on the other hand, show distinct popcorn-like calcifications within the lesion.