PMC2254641_01
Preoperative CT scans. The preoperative CT scans clearly demonstrate the main tumor in the upper lobe of the right lung.
1752-1947-2-21-1.jpg
PMC2254641_01_1752-1947-2-21-1.jpg
F1
A CT scan of the chest (Fig. 1) was indicated following detection of a pulmonary nodule in the right upper field on routine chest -x-ray.
Histology of the adenocarcinoma and a representative tumorlet. Pathological processing of the resected specimens revealed an adenocarcinoma of a mixed subtype with partial neuroendocrine differentiation (A; primary magnification x10) and multiple tumorlets, i.e. diffuse idiopathic pulmonary neuroendocrine cell hyperplasia (DIPNECH; B; primary magnification x10).
1752-1947-2-21-2.jpg
PMC2254641_01_1752-1947-2-21-2.jpg
F2
Pathological processing of the specimens revealed a 3.5 x 3 x 2.8 cm adenocarcinoma of a mixed subtype with partial neuroendocrine differentiation (Fig. 2). However, further processing of the multiple small lesions in the upper and middle lobe revealed five foci less than 5 mm in diameter with a different trabecular and nest-like morphology (Fig. 2).