周围型肺腺癌。腺癌和大细胞未分化癌更常发生在肺边缘。腺癌是单细胞类型的原发肺癌，多发生于非吸烟者和已戒烟者。如果肿瘤局限于肺(早期),切除后痊愈的机会更大。单个肿块往往说明是原发瘤，而不是转移瘤。
This is a peripheral adenocarcinoma of the lung. Adenocarcinomas and large cell anaplastic carcinomas tend to occur more peripherally in lung. Adenocarcinoma is the one cell type of primary lung tumor that occurs more often in non-smokers and in smokers who have quit. If this neoplasm were confined to the lung (a lower stage), then resection would have a greater chance for cure. The solitary appearance of this neoplasm suggests that the tumor is primary rather than metastatic.
