Histologic changes: Some parenchymal areas appeared as below. Identify the landmarks. Note the RB and pulmonary artery. What type of tissue fills the RB and extends upward and toward the left between the arrows? What is the diagnosis of this process? Answer 1

Note also that the alveolar walls are thickened. What cells are causing the thickening, and what cells predominate in the alveolar spaces? What is the homogeneous pink material in the alveoli? Answer 2

Case 10--Clinical summaryImage 3

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