A National Study in Patients With Unexplained Splenomegaly

Inclusion criteria: * Participants referred for the first time for splenomegaly exploration defined as : * Either a palpable mass on left upper abdominal quadrant, further confirmed by a ≥ 13 cm craniocaudal length on abdominal Imaging * Or a non palpable splenomegaly discovered on abdominal imaging and with a craniocaudal length ≥ 13 cm * Participants with splenomegaly (as defined above) of unknown origin Exclusion criteria: * Participants with obvious diagnostics based on clinical exam, patient's interview and the previous initial routine biological tests : * Diagnosis of portal hypertension * Diagnosis of hemolytic anemia * Diagnosis of hematological malignancy * Known diagnosis of Gaucher Disease The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.