Direct invasion of infectious agents, usually bacteria or fungi.
Granulomatosis with Polyangiitis.
Sturge-Weber Syndrome, also known as Encephalotrigeminal angiomatosis.
Abnormally dilated, tortuous veins.
A vascular proliferation in immunocompromised hosts caused by opportunistic gram-negative bacilli of the Bartonella family.
The most common form of vascular ectasia, characterized by a light pink to deep purple flat lesion composed of dilated vessels.
A clinical triad of recurrent oral aphthous ulcers, genital ulcers, and uveitis.
Prolonged, increased intraluminal pressure and loss of vessel support.
A rapidly growing red pedunculated lesion that easily bleeds and is often ulcerated.
Classic KS, Endemic African KS, Transplant-associated KS, and AIDS-associated KS.
A non-neoplastic vascular lesion resembling a spider, often associated with hyperestrogenic states.
Migratory thrombophlebitis where venous thromboses appear in one location, disappear, and then occur again in other sites.
Papules or nodules.
80%.
Neutrophilic vasculitis affecting small to medium sized vessels.
Superficial veins of the upper and lower legs.
Marked dilation of neck, head, and arm veins with cyanosis.
Group A β-hemolytic streptococci.
Permanent dilation of preexisting small vessels that form discrete red lesions.
A malignant endothelial neoplasm that primarily affects older adults.
A type of hemangioma with large, dilated vascular channels that are more infiltrative and do not regress.
Necrotizing granuloma of the URT or LRT, necrotizing or granulomatous vasculitis affecting small to medium vessels, and focal necrotizing glomerulonephritis.
Heavy cigarette smoking before the age of 35.
Exaggerated vasoconstriction of arteries and arterioles in the extremities.
Acute inflammation elicited by the spread of bacterial infections in the lymphatics.
Bartonella henselae (Cat scratch disease) and Bartonella quintana (Trench Fever).
An autosomal dominant disorder caused by mutations in the genes encoding for the TGF-β signaling pathway.
Cold-induced Raynaud phenomenon, superficial nodular phlebitis, leg pain induced by exercise, and chronic ulceration of extremities.
Neoplasms that compress or invade the superior vena cava.
T-cell mediated hypersensitivity to inhaled microbial or environmental agents.
Primary Raynaud is benign and often affects young women, while Secondary Raynaud is due to arterial diseases and has asymmetric involvement.
A generic term for any local dilation of any structure.
100% mortality within 3 years.
Tumors that arise from pericytes, associated with capillaries and venules.
A strawberry-type hemangioma of the newborn that fades by 1-3 years and regresses by age 7.
An isolated congenital defect or familial Milroy disease resulting in lymphatic agenesis or hypoplasia.
Human Herpes Virus 8 (HHV8).
Persistent pneumonitis, chronic sinusitis, mucosal ulcerations of the nasopharynx, and renal disease.
Monolayer endothelial lined vascular channels without atypia filled with RBC or lymph.
Stasis, congestion, edema, pain, and thrombosis.
Older men (90%) of Eastern European (Ashkenazic Jews) or Mediterranean descent.
Arsenic, Thorotrast, and polyvinyl chloride.
The most common type of hemangioma, composed of thin-walled capillaries with scant stroma.
Prolonged immobilization resulting in venous stasis.
Port wine stains tend to grow during childhood, thicken the skin surface, and do not fade.
A benign but painful tumor arising from modified smooth muscle cells of the glomus bodies, commonly found under fingernails.
