D, Round cell tumor with arborizing
, hyalinized vessels and perivascular clearing.
A, Intraductal oncocytic papillary neoplasm featuring intraductal growth and complex arborizing
papillae composed of tumor cells with oncocytic cytoplasm.
Intraductal oncocytic papillary neoplasms show complex arborizing
papillae, cribriform formations, and solid nests within the lumen of a dilated duct.
These polyps were described as hyperplastic, with gastric differentiation and arborizing
smooth muscle; the authors classified these polyps as Peutz-Jeghers syndrome hamartomatous polyps.
The last case of anti-KS disease demonstrated an OP pattern, with young granulation tissue plugs filling the lumens of small airways and tracking down alveolar ducts to distal airspaces, resulting in cords of branching, arborizing
granulation tissue at low magnification (Figures 3 and 4).
4) Capillaries are usually arranged in a linear, arborizing
pattern, giving an organoid endocrine appearance.
Perivascular epithelioid cell tumors may also show fascicular arrangement of spindle cells with delicate, arborizing
Nuclear fluorescence scans taken every 4 [micro]m also allowed visualization of the arborizing
structure of breast glands as noted in Figure 7, b.
On microscopic examination, most of the tumor was found to be composed of a serous neoplasm of low malignant potential, characterized by large arborizing
papillae lined by stratified cuboidal to columnar cells with budding and mild to moderate nuclear atypia (Figure 1, A).
3) In the workup of a metastatic lesion, this fine arborizing
vasculature is also a useful clue to attribute kidney as the primary site.
Histologically, these proliferations consist of stratified squamous epithelium with surface koilocytic atypia, growing on fibrovascular cores in an arborizing
pattern (Figure 1, A and B).
Both have tumor cells that lack the morphology of adipocytes while featuring a prominent arborizing