Lymph nodes - not lymphoma
Inclusions, pigment, ectopic cells or tissue
Prosthesis related changes

Author: William D. DePond, M.D. (see Authors page)

Revised: 27 June 2018, last major update July 2013

Copyright: (c) 2003-2018,, Inc.

PubMed Search: Prosthesis related changes lymph nodes

Cite this page: DePond, W. D. Prosthesis related changes. website. Accessed July 15th, 2018.
Definition / general
Case reports
Microscopic (histologic) description
  • Sinuses distended by large macrophages with abundant granular PAS+ eosinophilic cytoplasm representing polyethylene (Am J Surg Pathol 1989;13:1050)
  • May contain black specks which resemble "dirt"
  • Pelvic lymph nodes in patients with cobalt-chromium or titanium hip implants may have heavy metal microparticles or polyethylene particles with associated florid sinus histiocytosis (Am J Surg Pathol 1994;18:83)
Microscopic (histologic) images

Images hosted on other servers:
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Sinus histiocytosis
and histiocytes
with multiple
spindled particles

Positive stains
  • PAS+ polyethylene particles
Electron microscopy images

Images hosted on other servers:
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Particles are 1 micron