Pseudoepithelialization of Breast Implant Capsules

Author:

Chase Donald R.1,Oberg Kerby C.2,Chase Resa L.2,Malott Richelle L.2,Weeks Douglas A.2

Affiliation:

1. Department of Pathology and Laboratory Medicine, 11234 Anderson Street, Room 2146, Loma Linda, CA 92354.

2. Loma Linda University Medical Center

Abstract

A review of 11 breast implant capsules revealed that 5 (45%) possessed a pseudoepithe lial lining virtually indistinguishable morphologically from true synovium. These cap sules showed a spectrum of connective tissue metaplasia that culminated in an ex tremely well-ordered double layer of columnar-appearing cells marking only for vimentin intermediate filaments and failing to stain for various cytokeratins and human factor VIII. Neither trichrome stains nor electron microscopy showed evidence of a basement membrane. The cases indicate that under appropriate conditions breast tissues can undergo mesenchymal metaplasia as well as the much more common epithelial metaplasia. Furthermore, a process morphologically identical to that previ ously described as "synovial metaplasia" in other locations also occurs in some breast capsules where, as in the dermis and in periarticular sites, its development may be dependent upon local factors such as friction and micromotion. Int J Surg Pathol 1 (3): 151-154, 1994

Publisher

SAGE Publications

Subject

Pathology and Forensic Medicine,Surgery,Anatomy

Reference13 articles.

1. The synovial-like membrane at the bone-cement interface in loose total hip replacements and its proposed role in bone lysis.

2. McManus BM, Radio SJ, Schoen FJ In: Pathology and pathobiology of host-prosthetic interactions. United States and Canadian Academy of Pathology, New Orleans, LA, pp. 1-61, 1993

3. The origin and nature of pseudo-synovium appearing around implanted silastic rods an experimental study

4. Synovial Metaplasia of the Skin

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