Fig. 2

a From right to left, typical layers of the wall of a chronic PLA are visible: liquefaction necrosis with the abundance of neutrophils, granulation tissue with congested, young capillaries, a thick zone of proliferating fibroblasts and a variably thick layer of preserved liver parenchyma at the periphery of the specimen. (HE, × 25). b The inner layer of the chronic pyogenic abscess. To the right of a zone of neutrophil-rich liquefaction necrosis is a thick layer of granulation tissue with numerous, young capillaries and initial fibroblastic proliferation. (HE, × 100)