Introduction: The Challenge of the Radiographic Incidentaloma
In the era of high-resolution diagnostic imaging, clinicians are increasingly confronted with the incidentaloma—an unexpected finding discovered during a scan performed for an unrelated purpose. Among these, splenomegaly remains one of the most clinically ambiguous findings. While an enlarged spleen can be a benign anatomical variant or a response to transient infection, it is also a hallmark of serious underlying pathology, including myeloproliferative neoplasms, lymphomas, and advanced liver disease.
Until recently, the clinical community lacked robust, prospective data to guide the management of incidentally detected splenomegaly. At what specific length or volume does a finding transition from a radiological curiosity to a mandate for hematological or hepatological evaluation? A landmark study published in JAMA Oncology by Juhl et al. (2026) provides much-needed clarity, offering precise absolute and relative risk assessments based on two massive general population cohorts.
