Microscopically, it is characterized by anastomosing
and cyst-like vascular channels with papillary projections lined by sloughed plump endothelial cells often showing hemophagocytosis.
The cystic tumor exhibited thin anastomosing
strands of squamoid and basaloid epithelium with peripheral palisading and small terminal basaloid nubbins (Figure 6).
Microscopically, at low-power magnification the tumors were composed of a compact anastomosing
capillary network supported in the edematous and myxoid background (Figure 2, A).
The complex anastomosing
condition has been described in the Ambystomatidae (Baker and Taylor, 1964; Siegel et al.
3 In contrast, the histological features are remarkably similar and are benign appearing anastomosing
cords of eccrine epithelial cells with or without formation of lumina, embedded in loose fibrovascular stroma.
Radial artery usually begins in the cubital fossa about 1 cm below the bend of the elbow at the level of the neck of the radius just medial to the tendon of biceps brachii muscle, and terminates in the hand by forming the deep palmar arch after anastomosing
with the deep branch of the ulnar artery (1)
Many variations of anastomosing
these vessels were used, from direct suture to the use of collodion tubes over which the vessel was sutured.
The tumor was composed of a monomorphous population of small round cells lining microcystic structures and forming pseudoacini and fine anastomosing
trabeculae and cords.
It continues down the thigh, supplying the skin and anastomosing
with branches of the perforating arteries.
8,10) Histologically, tumors contain a proliferation of ramifying and anastomosing
vascular channels that "dissect" through surrounding structures.
These branches leave the main trunk of the artery, pass between the two layers of mesentery, and form anastomosing
arches or arcades as they pass outward to supply the small intestine.
They display several growth characteristics: glandular spaces, trabeculae, festoons, ribbonlike patterns, anastomosing
cords, and solid sheets with variable cohesiveness.