ending ▁portion ▁of ▁the ▁thor ac ic ▁a ort a ▁increases ▁in ▁length ▁by ▁approximately ▁ 1 2 % ▁per ▁de cade , ▁whereas ▁the ▁diameter ▁increases ▁by ▁just ▁ 3 % ▁per ▁de cade . ▁This ▁el ong ation ▁causes ▁the ▁asc ending ▁a ort a ▁to ▁appear ▁as ▁a ▁vertical ▁shadow ▁on ▁the ▁left ▁heart ▁border . ▁A ort ic ▁unfold ing , ▁though ▁not ▁serious , ▁should ▁be ▁differenti ated ▁from ▁the ▁more ▁severe ▁dis section ▁of ▁the ▁a ort a . ▁ ▁References ▁ ▁Category : Rad i olog ic ▁signs <0x0A> </s> ▁The ▁K em m end ine ▁( 1 9 2 4 ) ▁was ▁a ▁British ▁merchant ▁ship . ▁She ▁was ▁s unk ▁by ▁the ▁German ▁ra ider ▁Atl ant is ▁in ▁the ▁Indian ▁Ocean ▁on ▁ 1 3 ▁July ▁ 1 9 4 0 , ▁en ▁route ▁from ▁Glasgow ▁to ▁Bur ma . ▁Records ▁rel ating ▁to ▁the ▁ship ▁are ▁held ▁by ▁the ▁British ▁National ▁Archives . ▁ ▁References ▁ ▁External ▁links ▁▁ ▁Camp ▁di aries ▁reve al ▁amaz ing ▁bra very ▁of ▁the ▁te en age ▁sail or ▁who ▁became ▁the ▁young est ▁prisoner ▁of ▁war . ▁The ▁Sunday ▁Post ▁ ▁Category : Mar itime ▁inc idents ▁in ▁ 1 9 4 0 ▁Category : 1 9 2 4 ▁ships ▁Category : Ste am ships ▁of ▁the ▁United ▁Kingdom <0x0A> </s> ▁Mad rig ale jo ▁is ▁a ▁municipality ▁located ▁in ▁the ▁province ▁of ▁C á cer es , ▁Ext rem ad ura , ▁Spain .