What does splenomegaly mean?
Splenomegaly is the medical term for abnormal enlargement of the spleen, an organ involved in filtering blood, removing old blood cells, and supporting immune function. It is not a synonym for a generally enlarged but otherwise healthy spleen; the term implies that the enlargement is clinically significant. Causes are varied and can include liver disease, portal hypertension, certain infections, and disorders of the blood or immune system. Doctors may detect it during physical examination, blood testing, or imaging such as ultrasound or CT, and findings are interpreted alongside symptoms and other test results. In clinical writing, splenomegaly is often used as a finding rather than as a stand-alone diagnosis. Knowing the word helps readers of medical reports understand that the concern is enlargement of the spleen rather than inflammation of it. The term's literal composition also makes it memorable: it combines roots meaning “spleen” and “large.”
nounAbnormal enlargement of the spleen. The condition may be identified by physical examination, blood tests, or medical imaging.
- Abnormal enlargement of the spleen.
"Ultrasound confirmed splenomegaly, and the physician investigated possible underlying liver disease."
"The patient's blood tests and abdominal ultrasound showed splenomegaly."
"Persistent splenomegaly prompted further investigation for an underlying blood disorder."
The plural is used when referring to cases of splenomegaly or multiple instances of the condition.
"The study compared clinical features and outcomes among patients with different causes of splenomegalies."
The name lays out the diagnosis: Greek splēn, “spleen,” combined with megalos, “large.”
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does splenomegaly come from?
Splenomegaly combines the combining form splen-, derived from Greek splēn, meaning “spleen,” with -megaly, built from Greek megas or megalos, meaning “large.” The components were combined in the medical vocabulary of European languages to describe abnormal enlargement of the spleen. Related terms include splenic and splenectomy from splēn, as well as acromegaly and hepatomegaly from the same root meaning “large.”
Related word forms
How splenomegaly is actually used
This is a formal medical term used primarily in clinical reports, diagnoses, and specialist literature. It denotes an abnormal finding rather than a normal variation in spleen size.
Easily confused with splenomegaly
Splenomegaly means enlargement of the spleen, whereas splenitis means inflammation of the spleen.