Fig. 5: Gross and histologic features of type 3 CPAMs. | Modern Pathology

Fig. 5: Gross and histologic features of type 3 CPAMs.

From: Defining the spatial landscape of KRAS mutated congenital pulmonary airway malformations: a distinct entity with a spectrum of histopathologic features

Fig. 5

Three examples are shown. Grossly, these lesions are predominantly solid in appearance with occasional small cystic spaces (A–C). Histologically, they are characterized by a somewhat solid appearance at low power with no visible alveolar type spaces within the lesion (D–F) and consist of small irregularly shaped spaces lined by low columnar epithelium with ample intervening mesenchyme (G–I).

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