A not so predictable case of primary orbital b-cell lymphoma: imaging findings and review of literature

Lymphoma represents only 6-8% of all orbital masses. Its incidence is estimated tohave been rising over the last two decades. We describe the imaging feature of small and large diffuseB-cell primary lymphoma, which was found in the extra-conal orbital space. Imaging findingsof lesion, depicted on Computed Tomography and Magnetic Resonance were suggestive of thepresence of a soft-tissue neoplasm: the isolated appearance of our single orbital lesion made this achallenging diagnosis for radiologists and clinicians.A brief review – emphasizing imaging features – is reported in this manuscript, in order to increasediagnostic confidence of clinicians, radiologists and surgeons.