A 2 years old, mixed breed sow carcass presented a generalized skin erythema and, in certain lymphnodes, a slight reddening of the cortex was observed.

Histopathology of the skin did not lead to a morphological diagnosis due to artifacts caused in the skin by the scalding process (detachment of the epidermis and superficial dermis coagulation). At the deeper dermis a marked congestion of blood capillaries was observed along with the presence of leukocyte marginalization phenomena (polymorphonuclear neutrophils adhering to the wall of the capillaries).

It is therefore a generalized erythema (due to capillary congestion) of unknown cause. The possibilities that have been discussed include alterations by chemical or physical agents. Other diseases that present with erythematous lesions of hemorrhagic or necrotic type can also be ruled out such as erysipelas, swine fever or PDNS.

Unfortunately we have no information about the antemortem appearance of the animal, and therefore, we can not rule out (nor confirm) an alteration previous to slaughter. The condition was found in only one animal of the whole batch.

If anyone has encountered similar cases or has an idea of what can cause this type of lesion, you are welcome to share it in the comments section at the end of this post.

Pig carcass with generalized reddening of the skin.

Pig carcass with generalized reddening of the skin.

Subcutaneous adipous tissue was unaltered.

Subcutaneous adipous tissue was unaltered.