1973) Pinocy tosis by epithelium associated with lymphoid follicles
in the bursa of Fabricius, appendix, and Peyer's patches.
In the survey done in Iran lymphoid follicles
were present in 50% of the H.
BURSITIS SHOWING LYMPHOID FOLLICLES WITH LYMPHOCYTIC DEPLETION (ARROW).
Stage 3: Even more prominent lymphocytic infiltration, with lymphoid follicle
formation, parenchymal atrophy, peri-ductal hyalinization, and sclerosis.
Many of these cells were forming lymphoid follicles
The following additional 5 features were closely ranked: peripheral lymphocyte rim, peripheral lymphoid follicles
, possible subcapsular sinus, residual LN in surrounding fibroadipose tissue, and thick capsule.
The number of surface intraepithelial lymphocytes per 100 epithelial cells, counted in areas of high lymphocytic density in a sequential manner and avoiding epithelium overlying lymphoid follicles
F, Lymphoplasmacytic infiltration with lymphoid follicles
All the biopsies revealed almost similar histopathological features and consisted of necrotic antral mucosa, proliferating fibrous tissue, and bands of hyalinized collagen with dense chronic lymphoplasmacytic infiltrates with formation of lymphoid follicles
and giant cells extending into the subcutaneous fat and septa along with varying stages of granulation tissue (figure 3).
The differential diagnosis includes Masson vegetant or papillary endothelial hyperplasia (a reactive endothelial proliferation associated with organizing thrombus/clot); Kimura disease (lymph node disorder, most often in Asian men, who have peripheral serum eosinophilia, reactive lymphoid follicles
, follicular lysis, eosinophilic microabscesses, polykaryocytes, and IgE deposition); and angiosarcoma (freely anastomosing vessels, atypical endothelial cells, increased mitoses, necrosis).
Nodules of hyperplastic lymphoid follicles
of various sizes accompanied by expanded germinal centers, numerous eosinophils, and increased vascularity were also evident.
Some lymphoid follicles
of the bursa were effaced by fibrinoheterophilic infiltration admixed with yeasts, pseudohyphae, and colonies of coccoid-shaped bacteria.