title: Large B-cell lymphoma mimicking iliopsoas abscess following open revision of proximal femur infected non-union: a case report.
abstract: BACKGROUND
  Extranodal presentation of lymphoma is a rare occurrence. It has been postulated that chronic antigen stimulation may predispose a patient to the development of lymphoma.
  
  
  METHODS
  We present a case report of a large extranodal B-cell lymphoma mimicking a postoperative abscess following surgery for an infected proximal femur nonunion in an 80-year-old Caucasian male of Italian descent.
  
  
  CONCLUSIONS
  This case highlights the need to consider malignancy in revision surgery, careful examination of operative specimens and the need for further understanding of the role of metal implants in chronic antigen stimulation.
authors: Section of Orthopedic Surgery, Health Sciences Center, University of Manitoba, Winnipeg, Manitoba, Canada. j_mccammon@hotmail.com.
authors: James
authors: J
authors: McCammon
authors: Randy
authors: R
authors: Mascarenhas
authors: Michael J
authors: MJ
authors: Monument
authors: Abdul
authors: A
authors: Elyousfi
authors: Brad
authors: B
authors: Pilkey
mesh_terms: D000369:Aged, 80 and over; D003937:Diagnosis, Differential; D005264:Femoral Fractures / Q000000981:diagnostic imaging / Q000601:surgery*; D005269:Femur / Q000473:pathology; D005599:Fractures, Ununited / Q000000981:diagnostic imaging / Q000601:surgery*; D006615:Hip / Q000000981:diagnostic imaging; D006801:Humans; D007430:Intraoperative Care; D016403:Lymphoma, Large B-Cell, Diffuse / Q000175:diagnosis*; D008297:Male; D010388:Pelvis / Q000000981:diagnostic imaging; D016659:Psoas Abscess / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000209:etiology*; D013530:Surgical Wound Infection / Q000150:complications* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed