1985
DOI: 10.1111/j.1365-2133.1985.tb02341.x
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Generalized racemose livedo with cerebrovascular lesions (Sneddon syndrome): an occlusive arteriolopathy due to proliferation and migration of medial smooth muscle cells

Abstract: We describe two cases of livedo racemosa generalisata with cerebrovascular defects (Sneddon syndrome). The histology is characterized by a proliferation and migration of medial smooth muscle cells in ascending arterioles of the upper subcutis and deep dermis. Migrating smooth muscle cells with a high content of intermediate filaments colonize the sub-endothelial intimal space, with subsequent narrowing of the vessel lumen. Since the discoloration of the skin is provoked by a reactive dilatation of venules, the… Show more

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Cited by 53 publications
(25 citation statements)
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“…Symptoms are recurrent calcium oxalate nephrolithiasis and nephrocalcinosis, leading to chronic renal failure and death from uraemia. Skin biopsy demonstrates numerous characteristic elongate to diamond-shaped, radially oriented, pale yellow translucent oxalate crystals within the vessels, and vessel walls of the subcutaneous fat that were strongly birefringent under polarised light [58,80]. Also caused by arterial occlusion by embolising material is livedo racemosa in arterial myxoma [104].…”
Section: ■ Other Diseasesmentioning
confidence: 97%
See 1 more Smart Citation
“…Symptoms are recurrent calcium oxalate nephrolithiasis and nephrocalcinosis, leading to chronic renal failure and death from uraemia. Skin biopsy demonstrates numerous characteristic elongate to diamond-shaped, radially oriented, pale yellow translucent oxalate crystals within the vessels, and vessel walls of the subcutaneous fat that were strongly birefringent under polarised light [58,80]. Also caused by arterial occlusion by embolising material is livedo racemosa in arterial myxoma [104].…”
Section: ■ Other Diseasesmentioning
confidence: 97%
“…Another rare disease presenting with livedo racemosa is hyperoxaluria [58,80]. Symptoms are recurrent calcium oxalate nephrolithiasis and nephrocalcinosis, leading to chronic renal failure and death from uraemia.…”
Section: ■ Other Diseasesmentioning
confidence: 99%
“…The cerebrovascular insults originally described by Sneddon were of limited nature, often leaving little or no residual disability. On the other hand, there have been reports of several cases with livedo and progressive cerebral lesions [10][11][12][13][14][15] or livedo combined with severe cerebral deficit [2,16,17], Histopathological findings in biopsies of cutaneous lesions in Sneddon's syndrome may be very discrete and nonspecific [3,[14][15][16]; however, they have been variously described as endarteritis obliterans [2,24], endotheliosis of arterioles in the reticular dermis with occasional thrombo sis, focal segmental intimal hyperplasia [6,25] with prolifer ation and migration of medial smooth muscle cells through a discontinuous tunica elastica interna in the ascending arterioles of the upper subcutis or reticular dermis [23). Common to all these descriptions is a noninflammatory thickening of the vessel wall with eventual occlusion of the lumen, however without vasculitis.…”
Section: Discussionmentioning
confidence: 99%
“…1 Because vessel intimal endothelial and medial smooth muscle proliferations are the hallmarks of skin biopsy in SS, transposition of such a picture to the retinal vasculature may explain the angiographic staining and leakage preferentially located at arterial bifurcations and the arteriovenous crossing ( Fig. 2, C, E, and F).…”
Section: Discussionmentioning
confidence: 95%
“…1 Visual involvement in SS has been rarely described and includes homonymous hemianopia secondary to cerebral infarction, 2 bilateral central artery occlusion, 3 and peripheral retinal neovascularization. 4 We describe a 48-year-old woman with monocular relapsing vitreous hemorrhage (VH) secondary to retinal neovascularization and diffuse arterial occlusion.…”
mentioning
confidence: 99%