Digital gangrene and pulmonary consolidation in a young girl with Takayasu arteritis.

Takayasu arteritis (TA) is a large-vessel vasculitis most commonly affecting women of childbearing age. The disease process is usually slow and smoldering, presenting over months to years. Digital gangrene is an uncommon manifestation of TA because of the formation of good collateral circulation. Similarly, although pulmonary artery involvement is well described, pulmonary parenchymal involvement is very rare. We are reporting a case of a young girl with TA presenting with digital gangrene and pulmonary consolidation, which was treated successfully with a combination of aggressive systemic immunosuppression and anti-coagulants. The possible mechanism for gangrene along with the confounding diagnostic possibility of co-existing tuberculosis have been discussed.