A Case of Microscopic Polyangiitis with Subarachnoid Hemorrhage and Cardiovascular Complications.

Microscopic polyangiitis (MPA) is a primary systemic vasculitis that predominantly affects small and medium vessels. MPA is rarely complicated with central nervous system or cardiovascular disease. We report a very rare case of MPA complicated with cerebral infarction, cardiovascular disease, and fatal subarachnoid hemorrhage in a 54-year-old man. During the first six days of hospitalization the patient was diagnosed with rapid progressive glomerulonephritis (RPGN), cerebral infarction, and unstable angina. According to patient's symptoms and laboratory findings, were consisted with a diagnosis of severe MPA. Steroid pulse therapy was immediately introduced. However, the patient developed massive subarachnoid hemorrhage on the 8th day of hospitalization. The condition progressively deteriorated, and the patient died on the 33rd hospital day.