▁temporary ▁hem atur ia ▁can ▁also ▁be ▁seen ▁in ▁bl ad der ▁in fection ▁or ▁in ▁children ▁as ▁a ▁result ▁of ▁vir al ▁in fection . ▁ ▁C aus es ▁ ▁C aus es ▁of ▁hem or rh ag ic ▁c yst itis ▁include ▁chem other apy ▁( e . g . ▁cy clo ph osph am ide , ▁If os f am ide ), ▁radiation , ▁or ▁ ▁in fection . ▁If os f am ide ▁is ▁the ▁most ▁common ▁cause ▁of ▁hem or rh ag ic ▁c yst itis . ▁Rad iation - indu ced ▁hem or rh ag ic ▁c yst itis ▁develop s ▁in ▁similar ▁or ▁smaller ▁patient ▁numbers ▁when ▁compared ▁to ▁cy clo ph osph am ide - indu ced ▁cases . ▁ ▁A den ov irus ▁( part icular ly ▁ser ot ypes ▁ 1 1 ▁and ▁ 2 1 ▁of ▁subgroup ▁B ) ▁is ▁the ▁most ▁common ▁cause ▁of ▁ac ute ▁vir al ▁hem or rh ag ic ▁c yst itis ▁in ▁children , ▁though ▁it ▁can ▁result ▁from ▁B K ▁virus ▁as ▁well . ▁A ▁chemical ▁hem or rh ag ic ▁c yst itis ▁can ▁develop ▁when ▁v ag inal ▁products ▁are ▁in ad vert ently ▁placed ▁in ▁the ▁u re th ra . ▁ ▁Gent ian ▁vio let ▁d ouch ing ▁to ▁treat ▁candid ias is ▁has ▁resulted ▁in ▁hem or rh ag ic ▁c yst itis ▁when ▁the ▁drug ▁was ▁mis pla ced ▁in ▁the ▁u re th ra , ▁but ▁this ▁hem