Fig 1.
This figure shows an example of a patient with Sneddon syndrome with livedo reticularis on the right arm. This patient also had livedo reticularis on the legs, trunk, buttocks and face.
Table 1.
Clinical characteristics at diagnosis.
Fig 2.
Example one of a probable occlusive microangiopathy.
(A) Low magnification shows that the abnormal arteries are located in the deep dermis (box) (H&E, 25x). (B) In detail, multiple arteries with a patent lumen and a thickened vessel wall, suggesting neovascularization (H&E, 100x).
Fig 3.
Example two of a probable occlusive microangiopathy.
(A) Low magnification shows that the abnormal arteries are located in the deep dermis (box) (H&E, 20x). (B) In detail, extensive neovascularization (*) and recanalization (^) are visible (H&E, 200x).
Fig 4.
The right side of the biopsy shows a normal superficial dermis. On the left side of the biopsy, a livedo pattern is visible (arrow). There are more arteries in the superficial dermis, which are more horizontally arranged (H&E, 50x).
Table 2.
Histology findings.
Table 3.
Test characteristics of the skin biopsy.