This guidance applies to incidentally discovered splenic mass in asymptomatic adults. It does not apply to patients with symptoms attributable to spleen or patients with lymphoma.

Are there any benign imaging features?

Yes. Benign imaging features.

Nondiagnostic imaging features.

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Notes:
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Benign imaging features:
        1. Cyst: Imperceptible wall, near-water attenuation(<10 HU), no enhancement.
        2. Hemangioma: Discontinuous, peripheral, centripetal enhancement. 
        3. Other benign features: Homogeneous, low attenuation (<20 HU), no enhancement, smooth margins.