2) showed a tumour composed of well-formed small-sized to medium-sized tubules and cystically dilated larger tubules, separated by thin fibrovascular
There are many ocular features and complications of retinopathy of prematurity including: avascularity of the peripheral retina, extra-retinal fibrovascular
proliferation, vitreous haemorrhage, retinal detachment, leukocoria, and engorgement of retinal and iris vessels.
Exophytic papilloma shows delicate fibrovascular
cores covered by epithelium that varies between three types: squamous; ciliated, pseudostratified columnar respiratory type epithelium; and transitional epithelium (figure 2).
Microscopically, three sections of kidney contained a poorly circumscribed, nonencapsulated, multifocal to coalescing neoplastic proliferation of well-differentiated tubular epithelium arranged in tubules, tubulopapillary structures, and rare cysts supported in delicate fibrovascular
stroma (Fig 4).
A papillary configuration of epithelial cells surrounding a fibrovascular
stalk is the histologic hallmark.
Postcontrast peripheral enhancement often corresponds to fibrovascular
tissue covering the nonenhancing hyaline cartilage.
The tumour was composed of trabeculae and sheets of neoplastic cells of varying sizes with flocculent cytoplasm and well defined cell borders separated by thin fibrovascular
The martini glass is represented by triangular retrolental fibrovascular
tissue and a central tissue stalk of hyaloid remnant extending to the optic disc in Cloquet's canal (see Figure 1a).
replacement of normal trabeculae with numerous small vessels and proliferation of mesenchymal and fibroblast-like cells ensues and persists, instead of a reparative phenomenon with new bone formation.
However, in order for skin substitutes to be applied to patients with full-thickness skin loss, the substitutes should function as an alternative to autologous skin, form an effective barrier against bacterial invasion, minimize inflammation and scar formation, improve fibrovascular
tissue ingrowth, and have excellent reproducibility [2,3].
Infrequently, SPTs can be predominantly solid, lacking the characteristic pseudopapillary structures and fibrovascular
cores that typically separate SPT from other, solid pancreatic tumors.
The photograph gives evidence of the ingrowth of bone and fibrovascular
cells into both precut slots in the bone walls.