▁of ▁the ▁heart ▁that ▁is ▁usually ▁ben ign ▁ ▁Di vert icul um ▁of ▁Kom mer ell : ▁is ▁an ▁out - p ouch ing ( ane ur ys m ) ▁of ▁the ▁a ort a ▁where ▁an ▁aber rant ▁right ▁sub c lav ian ▁ar tery ▁is ▁located . ▁It ▁is ▁unusual ▁nom en cl ature , ▁in ▁that ▁foc al ▁dil at ations ▁of ▁a ▁blood ▁vessel ▁are ▁properly ▁referred ▁to ▁as ▁an eur ys ms . ▁ ▁See ▁also ▁S ke let al ▁p neum atic ity ▁ ▁Foot notes ▁ ▁External ▁links ▁▁ ▁Category : Med ical ▁termin ology <0x0A> </s> ▁The ▁Encyclopedia ▁of ▁China ▁() ▁is ▁the ▁first ▁large - entry ▁modern ▁en cyc lopedia ▁in ▁the ▁Chinese ▁language . ▁The ▁compilation ▁began ▁in ▁ 1 9 7 8 . ▁Pub lished ▁by ▁the ▁Encyclopedia ▁of ▁China ▁Publishing ▁House , ▁the ▁en cyc lopedia ▁was ▁issued ▁one ▁volume ▁at ▁a ▁time , ▁beginning ▁in ▁ 1 9 8 0 ▁with ▁a ▁volume ▁on ▁astronom y ; ▁the ▁final ▁volume ▁was ▁completed ▁in ▁ 1 9 9 3 . ▁It ▁compr ised ▁ 7 4 ▁volumes , ▁with ▁more ▁than ▁ 8 0 , 0 0 0 ▁entries . ▁Arr anged ▁by ▁subject , ▁which ▁number ed ▁ 6 6 ▁( some ▁subjects ▁occup y ▁more ▁than ▁one ▁volume ), ▁within ▁each ▁subject , ▁entries ▁were ▁arranged ▁by ▁p iny in ▁as ▁many ▁modern ▁Chinese ▁diction aries ▁have ▁been . ▁A ▁U yg h ur ▁language ▁edition ▁was ▁also