Arteriovenous fistula. Cutaneous manifestations

Abstract

The association between congenital large-vessel arteriovenous (AV) fistulae of the extremities with Kaposiform acroangiomatosis is well established. Based on pathogenetic considerations, it is likely that many benign, cutaneous angiomatoses represent minute or microscopic AV fistulae. Combined large vessel and small vessel congenital AV fistulae of the extremity would result in the previously mentioned syndrome.

Intravenous lobular capillary hemangioma originating in the iliac veins: A case report

“…1,6,10 There are no known associated risk factors; however, some reports suggest these lesions are linked with arteriovenous malformations. [11][12][13] The differential diagnosis characteristically focuses on vascular related pathologies, including deep venous thrombosis, aneurysm, ganglion or other neural lesion, vascular tumor, and papillary endothelial hyperplasia. 1,4,9 With no characteristic clinical features, the diagnosis of intravenous lobular capillary hemangioma relies on imaging studies.…”

“…16 Benign tumors such as papillary endothelial hyperplasia can be distinguished from intravenous lobular capillary hemangioma by its papillary architecture, presence of hemosiderin deposits, and association with organized thrombi. 3,[9][10][11] CONCLUSION Intravenous lobular capillary hemangioma is a rare benign lesion, usually found in the veins of the upper extremity and neck. 1,3,6,7 To our knowledge, our patient represents the first reported case of a lobular capillary hemangioma originating in an iliac vein.…”

Intravascular Pyogenic Granuloma Arising in an Acquired Arteriovenous Malformation: Report of a Case and Review of the Literature

“…Although the exact pathogenesis is uncertain, it has been proposed that pyogenic granuloma may occur at the sites of microscopic arteriovenous anastomoses. 17 In support of this hypothesis, there are several reported cases of patients with pyogenic granuloma occurring in association with a port wine stains, which are associated with arteriovenous anastomoses. 1,18 In the presented case, the formation of intravenous pyogenic granuloma in a preexisting arteriovenous malformation could also support this hypothesis.…”

Eruptive angiomata in malignant disease

“…However, there are no other reports of cutaneous angiomata in liver disease, although spider telangiectases are well recognized. Rusin & Harrell (1976) have suggested that granuloma pyogenicum arises as the result of the formation of minute arterio-venous fistulae by trauma, and it is possible that malignant cells could damage vessels and produce such fistulae.…”