Figure 2.
Representative pathology. (A) Uniform interstitial fibrosis and mild chronic inflammation characteristic of fibrotic NSIP (H and E, ×4). (B) CD34 (×20) and (C) CD31 stains demonstrate subintimal proliferation by non-endothelial cells (×20). (D) H and E staining (×10) and (E) Movat staining (×20) demonstrate arterial medial hypertrophy with eccentric intimal proliferation. (F) Medial thickening and subintimal proliferation consisting of smooth muscle cells (smooth muscle actin stain, ×20). (G) Concentric intimal proliferation (H and E, ×20). (H) Venous muscularization (Movat statin, ×20).