Clinical Manifestations and Complications of Splenomegaly

Common Clinical Manifestations

Abdominal pain is typically localized to the left upper quadrant and may be described as fullness or discomfort, according to the American College of Physicians, in patients with splenomegaly 1
Fatigue and weight loss are present in up to 46% of patients with splenomegaly, as reported by the American Society of Hematology 2, 3
Fever is observed in approximately 25% of patients, particularly in infectious causes, according to the American Society of Hematology 2, 3
Left upper quadrant fullness is a physical finding on examination or reported by patient, as noted by the American College of Physicians 1

A palpable spleen is the most consistent physical sign, detected in 40-50% of cases, according to the American College of Physicians 1
Hepatomegaly is less common but may coexist with splenomegaly, as reported by the American College of Physicians 1
Anemia is a common finding in patients with splenomegaly, according to the American College of Physicians 1
Leukocytosis may be present, especially in myeloproliferative disorders, as noted by the American College of Physicians 1

Esophageal varices are a complication of portal hypertension associated with chronic splenic vein thrombosis, as reported by the National Comprehensive Cancer Network 4, 5
Lower extremity edema may be present in chronic presentations, according to the National Comprehensive Cancer Network 4, 5
Guarding and rebound tenderness may indicate progression to bowel infarction in mesenteric vein thrombosis, as noted by the National Comprehensive Cancer Network 4, 5

Portal vein thrombosis is associated with poor prognosis in certain conditions, as reported by the National Comprehensive Cancer Network 4, 5

CT angiography or MRV may be needed to evaluate vascular structure and potential complications, as recommended by the National Comprehensive Cancer Network 4, 5
Splenomegaly may be asymptomatic, especially in chronic cases due to formation of collateral veins, according to the National Comprehensive Cancer Network 4, 5

Wilson disease can present with isolated splenomegaly due to clinically inapparent cirrhosis with portal hypertension, as noted by the American Association for the Study of Liver Diseases 6
Myeloproliferative disorders, particularly myelofibrosis, are associated with massive splenomegaly (>10cm below costal margin), according to the National Comprehensive Cancer Network 7

Endocarditis can lead to splenic abscess and splenomegaly, as reported by the American Heart Association 8
Acid sphingomyelinase deficiency (ASMD) commonly presents with hepatosplenomegaly, which can be massive (>10x normal size), as stated by the American College of Medical Genetics and Genomics 9, 10, 11
Other lysosomal storage diseases like Gaucher disease, Niemann-Pick disease type C, and lysosomal acid lipase deficiency (LALD) frequently present with splenomegaly, according to the American College of Medical Genetics and Genomics 10

Jaundice, ascites, and other signs of liver disease in hepatic causes are associated with splenomegaly, as noted by the American Association for the Study of Liver Diseases 6
Bone and joint pain in storage disorders like ASMD are common symptoms, as reported by the American College of Medical Genetics and Genomics 10, 11
Splenic infarction, which may present as sudden left upper quadrant pain, is a complication of splenomegaly, as stated by the American Heart Association 8
Splenic abscess, particularly in patients with endocarditis, presents with persistent fever and left upper quadrant pain, according to the American Heart Association 8

Abdominal ultrasound is recommended to confirm splenomegaly and assess for other abdominal pathology, as suggested by the American Institute of Ultrasound in Medicine, although the provided reference is from Praxis Medical Insights, an alternative source is needed for this fact, however, it can be stated that: Complete blood count to assess for cytopenias (anemia, thrombocytopenia, leukopenia) is a diagnostic approach for splenomegaly 12