LETTERS TO THE EDITOR Unusual mesenteric

fibromuscular dysplasia – a rare cause for chronic intestinal ischaemia Fibromuscular dysplasia (FMD) was a term introduced by McCormack et al1 to describe a rare non-atherosclerotic, non-inflamma-tory segmental occlusive disorder of med-ium-sized vessel arteries.2 The FMD may be intimal, medial or periarterial, depending on the site of fibro-muscular proliferation.2 Mesenteric arteries are uncommonly affected. Herein, we report an unusual petal-like FMD of mesenteric arteries pro-duced by adventitial and periadventitial smooth muscle proliferation with an addi