A congenital arteriovenous fistula is an abnormal connection between an artery and a vein that is present at birth.

जन्मजात धमनी-शिरा नाड़ी का असामान्य जुड़ाव

English Usage: The patient was diagnosed with a congenital arteriovenous fistula.

Hindi Usage: मरीज को जन्मजात धमनी-शिरा नाड़ी के फिस्टुला का निदान हुआ।