Figure 4b. Gross pathologic and histologic features of nonclassic FNH. (a) Cross section of a fixed resected specimen shows a nonclassic FNH (*). The lesion contains neither prominent septa nor a central scar. Normal liver tissue surrounds the FNH without a fibrous capsule. (b) Photomicrograph (original magnification, x200; H-E stain) of the FNH shows a short septum containing a small amount of connective tissue and ductular proliferation. (Fig 3c shows ductular proliferation in the same slide.) (c) Photomicrograph (original magnification, x200; H-E stain) of a specimen from another patient shows a small area of FNH containing monotonous hepatocytes (*), an appearance that resembles that of adenoma and suggests a mixed type of FNH. (d) Photomicrograph (original magnification, x200; H-E stain) of a specimen from another patient shows telangiectatic FNH, which is composed of a relatively short septum (straight arrow) and atrophic hepatocytes with wider sinusoids than those normally present in classic FNH (curved arrow).