In most cases the lymphoma cells were found within the periprosthetic effusion contained within the fibrous capsule
formation around the implant particles enables the implant material to stay in position for a long time without being resorbed.
Microscopic sections demonstrated massive hematoma surrounded by a fibrous capsule
with small foci composed of papillary structures seen at the periphery of the specimen showing papillary endothelial hyperplasia-like features (Fig.
Magnetic resonance (MR) imaging may reveal a well-defined lesion with a fibrous capsule
and hemorrhagic components.
A slight hypointense rim was also evident, which represented the fibrous capsule
that enhances on postgadolinium Tl images (Figure 2a and 2c).
The specimen demonstrated typical characteristics of classical seminoma with a smoothly demarcated fibrous capsule
, which had a vascularized outer surface, and some spermatic chord structures were also identified macroscopically.
During explant surgery, the fibrous capsule
often requires dissection in order to perform surgical repair of the valve; Dr Virmani reports on three MitraClip(R) explants with minimal tissue disturbance.
Histologically, the neoplasm appeared to lie within a fibrinous exudate and penetrate or become trapped in a thick fibrous capsule
(Figure 3, A).
Protein and lipid deposition is decreased; * Adhesion of bacteria and other micro-organisms is discouraged; * Biofilm and clot formation is minimised; * Inflammatory response is reduced; and * Fibrous capsule
generation is diminished.
However a collagenous fibrous capsule
was formed at 10 days (Fig.
They are well-defined and surrounded by a thin fibrous capsule
, and can become quite large, but if they are benign do not cause a major problem.
The whole joint is also supported by fibrous capsule
that surrounds it and helps provide stability.