Splenic Neoplasms

Introduction

Splenic Neoplasms and benign hyperplasia are consideration once splenomegaly has been detected clinically by palpation or following radiography - some splenic neoplasias are surgically curable.

Hyperplastic Nodules or Benign Lymphoma

• very common incidental findings in older dogs
• should not be mistakenly identified as pathognomic lesions
• consist of nodules of hyperplastic white and red pulp

- usually 1-2 cms in size, but occasionally may be larger

- spherical

- protrude hemispherically from the surface as yellow and red mottled nodules

• infrequently, may rupture and give rise to haemorrhage

Haematopoietic Neoplasms

myeloid (granulocytic) leukaemia

• rare
• all species
• extreme form with spleen approaching liver size

systemic mastocytosis

• cat
• extreme form with spleen approaching liver size