Figure 5 | Modern Pathology

Figure 5

From: Assessment of invasion in lung adenocarcinoma classification, including adenocarcinoma in situ and minimally invasive adenocarcinoma

Figure 5

Pneumonia like/multifocal ‘BAC’ and mucinous BAC. (a) A lobectomy of lung almost completely replaced by malignant consolidation. The histology of the tumor was varied but showed extensive papillary areas, shown in panel b. (c) The raised pale and glistening gross appearance of a mucinous adenocarcinoma. (d) The histology of mucinous adenocarcinoma is bland mucin-producing cells ‘stuck on’ alveolar walls. In the lower left, there are back-to-back mucinous glands that despite the absence of desmoplasia represent invasion (H&E stains, original magnification (b) × 150 and (d) × 100).

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