1. Rachael's MPA Support Site
Support and information for people fighting Microscopic Polyangiitis. Microscopic Polyangiitis. What is Microscopic Polyangiitis. Microscopic Polyangiitis, or MPA, is a disease that causes inflammation of small blood vessels and capillaries in...
http://www.users.fast.net/~rcb1/mpa/

2. Microscopic Polyangiitis: Vasculitis: Merck Manual Professional -- Merck Co., Inc. Is A Global ...
Microscopic Polyangiitis: Microscopic polyangiitis affects arteries but also arterioles, capillaries, and venules. Microscopic polyangiitis is suspected in patients with evidence of systemic necrotizing vasculitis with pulmonary or renal involvement.
http://www.merck.com/mmpe/sec04/ch033/ch033e.html

3. What You Need to Know About Microscopic Polyangiitis -- Best Hospitals, The Cleveland Clinic
What is Microscopic polyangiitis. The areas most commonly affected by MPA include the kidneys, lung, nerves, skin, and joints. MPA shares many common features with another form of vasculitis called Wegener s granulomatosis, and treatment...
http://www.clevelandclinic.org/arthritis/treat/facts/microscopic%20polyangiitis...