Lymphoma is the most common neoplasia in pigs. This is the fourth case we publish in this forum.

The case consisted of a 2-3 years old sow with multiple, whitish, nodular lesions in the kidneys and the liver. The latter was considerably enlarged.

This neoplasm can be sporadic or familiar, if associated to a recessive autosomal mutation. It can be detected from the age of two months and the affected animal’s mean survival time is of 4 to 6 months. Most of the cases are diagnosed at the abattoir.

The typical lesions are:

  • Widespread enlargement of lymph nodes (particularly the mesenteric).
  • Splenomegaly.
  • Multifocal renal lesions are frequent (particulary in the sporadic form).
  • Hepatomegaly.
  • The stomach and intestines can also be involved.

Evident hepatomegaly with multiple white nodular lesions.

Detail of the lesions. Cut section of the liver parenchyma.

Detail of the lesions. Cut section of the liver parenchyma.

Multifocal nodular renal lesions.

Multifocal nodular renal lesions.