Causes of Splenomegaly in the Elderly

Hepatic Causes

The American Association for the Study of Liver Diseases suggests that cirrhosis with portal hypertension is a frequent cause of splenomegaly in elderly patients, often presenting as isolated splenomegaly due to clinically inapparent cirrhosis 3
Chronic liver disease may lead to splenomegaly through portal hypertension, with patients potentially having other signs of liver disease such as jaundice and ascites 2

The American College of Hematology recommends considering myeloproliferative disorders, particularly myelofibrosis, as a cause of massive splenomegaly (>10cm below costal margin) in elderly patients 2
Smoldering multiple myeloma (SMM) should be considered in patients over 65 years, as the median age at diagnosis ranges from 65 to 70 years 4
Lymphoproliferative disorders including lymphomas are important causes of splenomegaly in older adults 1

Acid sphingomyelinase deficiency (ASMD) can present with hepatosplenomegaly, which may be massive (>10x normal size), though this is less commonly diagnosed initially in elderly patients 1, 2
Other lysosomal storage diseases like Gaucher disease and Niemann-Pick disease should be considered, though they are typically diagnosed earlier in life 1, 2

Splenic abscess, particularly in patients with endocarditis, presents with persistent fever and left upper quadrant pain 2

Splenic vein thrombosis can lead to isolated splenomegaly due to localized portal hypertension 2
Portal vein thrombosis may be associated with splenomegaly and carries a poor prognosis in certain conditions 2

Abdominal ultrasound should be performed to confirm splenomegaly and assess for other abdominal pathology, including signs of portal hypertension 1, 5
Complete blood count is essential to assess for cytopenias (anemia, thrombocytopenia, leukopenia) which may indicate portal hypertension or hematologic disorders 5
Liver function tests should be obtained to evaluate for hepatic causes of splenomegaly 5
Bone marrow examination may be informative in patients older than 60 years or those with systemic symptoms 6, 5
CT angiography or MRI may be needed to evaluate vascular structure and potential complications 2

Do not assume immune thrombocytopenia (ITP) is the cause of splenomegaly, as less than 3% of ITP patients have splenomegaly 5
Mild splenomegaly may be found in younger patients with ITP, but moderate or massive splenomegaly suggests an alternative cause 6
Constitutional symptoms such as fever or weight loss, hepatomegaly, or lymphadenopathy might indicate underlying disorders such as HIV, systemic lupus erythematosus, or lymphoproliferative disease 6