Abstract
Behcet's disease (BD) is an uncommon, long-term inflammatory condition characterized by recurring ulcers in the mouth and genital area, uveitis, and various systemic issues. One of the particularly rare but severe complications of this disease is the formation of pulmonary artery aneurysms (PAAs). Although these aneurysms are uncommon, they can lead to dangerous pulmonary hemorrhages (PHs), which are often fatal, requiring prompt diagnosis and intervention. We present a case of lower segment PAA in an 18-year-old patient with recently diagnosed BD, presenting with life-threatening PH and managed successfully with microcoil embolization of the aneurysm and immunosuppressive (IS) medications, achieving stable remission without complications.