[Lymphoma of the knee joint simulating patellar fracture].
Fracture of the patella is not uncommon after direct anterior knee trauma. However, there are other medical situations that resemble it radiologically. We present a patient mistakenly diagnosed as having a patellar fracture who had primary, solitary, malignant B-cell lymphoma of the knee space eroding the lower pole of the patella. We have found no reports of such a lesion in the literature. Another common benign condition that might erode adjacent bone is chronic synovitis. Our patient was treated with chemo- and radiotherapy and the lesion fully regressed with no evidence of local or systemic recurrence 1.5 years after diagnosis.
Orthopedics Dept., Shaare Zedek Medical Center, Jerusalem.
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Lebel
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Itzchaki
D000368:Aged; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D003131:Combined Modality Therapy; D003520:Cyclophosphamide / Q000008:administration & dosage; D003937:Diagnosis, Differential; D004317:Doxorubicin / Q000008:administration & dosage; D050723:Fractures, Bone; D006801:Humans; D007719:Knee Joint; D016393:Lymphoma, B-Cell / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000532:radiotherapy; D008297:Male; D010329:Patella; D011239:Prednisolone / Q000008:administration & dosage; D011859:Radiography; D014750:Vincristine / Q000008:administration & dosage
D014750:Vincristine; D004317:Doxorubicin; D003520:Cyclophosphamide; D011239:Prednisolone