Fig. 6
From: Lesions and pathogens found in pigs that died during the nursery period in five Danish farms
Gross and histological lesions in the skin, lungs and stomach. A Necrotic ulceration located at the apex of the pinna from a pig. Grossly, the necrotic tissue had a dark and dry appearance. B Tissue sample from a necrotic ear ulceration. Histologically, the lesion is characterized by coagulation necrosis of the epidermis. The arrow points out the transition between necrotic and viable cells in stratum basale. Moreover, fragmentation of the cartilage and thrombosis (t) were present (see insert), hematoxylin and eosin. C Lungs from a pig with peracute, embolic pneumonia. Apart from being heavy, no lesions could be palpated in the lungs. Therefore, the rib impressions on the caudal lobes were interpreted as interstitial pneumonia. However, the histological evaluation of the lungs revealed an embolic pneumonia (D). D Peracute embolic pneumonia. The tissue was sampled from the lungs shown in C. Histologically, the lung tissue was characterized by hyperemia, hemorrhage, foci of thrombosis and infiltration of neutrophilic granulocytes, hematoxylin and eosin. E Ulcerations and hyperkeratosis in the pars cardiaca of the stomach from a pig. F Tissue sampled from the pars cardiaca of the stomach shown in E. Histologically, the pars cardiaca is characterized by parakeratosis, ulceration, thrombosis, necrosis and infiltration of leucocytes, hematoxylin and eosin