Post-traumatic lymph node infarction in the knee mimicking synovial sarcoma

Traumatic Haemorrhagic Cervical Lymphadenopathy with Underlying Infectious Mononucleosis

“…In some rare cases, these lymph nodes have been reported to contain geographic areas of necrosis and infarction [ 3 , 10 ]. With regard to trauma, a case of lymph node infarction due to chronic trauma in the knee of a healthy patient has been previously described, mimicking synovial sarcoma on MRI [ 4 ]. In this case, the patient did not have underlying lymphadenopathy, and there was a history of chronic minor traumas, rather than an acute precipitory event.…”

“…Splenomegaly can also occur and these patients have an increased risk of traumatic splenic rupture [ 2 ]. Lymphadenopathy as a result of trauma is quite rare with only a handful of case reports in the literature [ 3 , 4 ]. Haemorrhagic lymphadenopathy classically occurs in the core of necrotic lymph nodes that are affected by malignancy, either primary malignancy, as in lymphoma, or secondary metastasis [ 5 ].…”