$BBh(B25$B2sF|K\IBM}3X2q6a5&;YIt3X=Q=82q8!F$>INc(B

589$B!'(B$BK68!$K$F(BCaplan$B7k@a$+(BPMF$B$+7k3K7k@a$+4UJL:$Fq$J7k@a@-IBJQ$rG'$a$?(B1$BNc(B

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$BEjI<7k2L(B
pulmonary tuberculosis...4
Caplan$B7k@a(B...5
Silicotic nodule...1
Rheumatoid nodule...1

$B8!F$7k2L(B
$BAH?%A|$@$1$G$OH=CG$G$-$J$$!#J,;R@8J*3XE*8!F$$r4^$a$?7k3K$N8!F$$rDI2C$9$k$Y$-!#(B

$B>INc(B 70$B:MBeA0H>!"CK@-(B

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590$B!'J"ItFbB!NN0h$NF0L.an$N#1Nc(B

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$BEjI<7k2L(B
Segmental arterial mediolysis...5
Fibromuscular dysplasia...1
Classic polyarteritis nodosa...1

$B8!F$7k2L(B
Segmental arterial mediolysis

$B>INc(B 50$BBe!"=w@-(B

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$B0f>e!!7r!">.NSMG

$BEjI<7k2L(B
Solitary fibrous tumor...6
Leiomyoma...1
Nodular stromal hyperplasia...1
Stromal sarcoma of the prostate...2
Prostatic stromal proliferation of uncertain malignant potential...1
Synovial sarcoma...1

$B8!F$7k2L(B
Stromal sarcoma of the prostate

$B>INc(B 60$B:PBfA0H>!"CK@-(B

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WBC 6270 RBC 366$B!_(B104 Hb 10.7 Plt 21.3$B!_(B104
LDH 160 TP 6.9 Alb 3.9 AST 23 ALT 16 BUN 10.5
PSA 2.5($B@5>oCM(B0-4)

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MRI: $BA0N)A#:8MU>eIt$h$j:830A#It$K9-$,$k(BT1$B6/D4A|$GEy?.9f!"(BT2$B6/D4A|$GIT6Q0l$JDc?.9f$r<($97B(B4cm$BBg$N
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$BEjI<7k2L(B pulmonary tuberculosis...4 Caplan$B7k@a(B...5 Silicotic nodule...1 Rheumatoid nodule...1 $B8!F$7k2L(B $BAH?%A\|$@$1$G$OH=CG$G$-$J$$!#J,;R@8J3XE8!F$$r4^$a$?7k3K$N8!F$$rDI2C$9$k$Y$-!#(B
$B>INc(B	70$B:MBeA0H>!"CK@-(B
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$B	$B%^%/%m2hA\|(B1$B!"(B$B%^%/%m2hA\|(B2$B!"(B$B%^%/%m2hA\|(B3$B!"(B$B%^%/%m2hA\|(B4$B!"(B $B%_%/%m2hA\|(B1$B!"(B$B%_%/%m2hA\|(B2$B!"(B$B%_%/%m2hA\|(B3$B!"(B$B%_%/%m2hA\|(B4$B!"(B$B%_%/%m2hA\|(B5$B!"(B$B%_%/%m2hA\|(B6$B!"(B$B%_%/%m2hA\|(B7$B!"(B$B%_%/%m2hA\|(B8$B!"(B$B%_%/%m2hA\|(B9$B!"(B$B%_%/%m2hA\|(B10$B!"(B$B%_%/%m2hA\|(B11

590$B!'J"ItFbB!NN0h$NF0L.an$N#1Nc(B $BBg:eI\N)5^@-4\|!&Am9g0eNE%;%s%?!2@8L?2J3X2J(B(3) $BCfF;(B $B0KDE;R(B1)$B!"Iz8+(B $BGn>4(B1)$B!"8WF,(B $BNw(B1)$B!"CSFb(B $B>0;J(B2)$B!"M3C+(B $B?FIW(B3)
$BEjI<7k2L(B Segmental arterial mediolysis...5 Fibromuscular dysplasia...1 Classic polyarteritis nodosa...1 $B8!F$7k2L(B Segmental arterial mediolysis
$B>INc(B	50$BBe!"=w@-(B
$B7P2a(B	$B!Z $B!Z4{1}Nr![?Ub3?U1j(B(5$BG/A0(B) $B!Z2HB2Nr![FC5-$9$Y$-$3$H$J$7(B $B!Z8=IBNr![(B2$BF\|A0$+$i21!$X5_5^HBAw$H$J$C$?$,8!::Cf$K%7%g%C%/>uBV$H$J$j!"Ev1!$KHBAw$5$l$?!#(B $B!ZF~1!;~8=>I![J"ItA4BN$K05DK$,G'$a$i$l$?$,!"6Z@-KI8f$O$J$/!"D2j@F02;$OD0 $B!ZLdBjE@![IBM}AH?%3XE?GCG!J:N/NL$N$?$a!"5,DjKg?t$N:n@.$O:$Fq$G$7$?!#%G%8%?%k2hA\|$$h$S2q>l$K$*$1$k6!MwI8K\$r$4;2>H2<$5$$!#!K(B
$B	HE$B!"(B$B%(%i%9%F%$%+%o%s%.!<%=%s@w?'(B$B!"(B$B%"%6%s@w?'(B$B!"(B$B9bG\N((BHE

591$B!'A0N)A# $BBg:e;TN)Am9g0eNE%;%s%?! $B0f>e!!7r!">.NSMG
$BEjI<7k2L(B Solitary fibrous tumor...6 Leiomyoma...1 Nodular stromal hyperplasia...1 Stromal sarcoma of the prostate...2 Prostatic stromal proliferation of uncertain malignant potential...1 Synovial sarcoma...1 $B8!F$7k2L(B Stromal sarcoma of the prostate
$B>INc(B	60$B:PBfA0H>!"CK@-(B
$B7P2a(B	$B!ZNW>27P2a![(B $B0JA0$h$jGSG":$Fq$,$"$C$?$,J\|CV$7$F$$$?!#0lJ}!"BgB\9\|F,2u;`$K$F@07A302JDL1!$7$F$$$?$H$3$m!"(BCT, MRI$B$K$FA0N)A#:8MU$+$ig/fyFb$KBg$-$/FM=P$7$?I>u$J$$$7A0N)A#4b$N5?$$$K$F(BTUR$B$,;\9T$5$l$?!#$=$NAH?%A\|$G$O!"(BSarcoma, Sarcomatoid carcinoma$B$,5?$o$l$?$,!"3NDj?GCG$K$O;j$i$:!"g/fyA0N)A#A4E&=P=Q$,;\9T$5$l$?!#(B $B!Z8!::=j8+![(B WBC 6270 RBC 366$B!_(B104 Hb 10.7 Plt 21.3$B!_(B104 LDH 160 TP 6.9 Alb 3.9 AST 23 ALT 16 BUN 10.5 PSA 2.5($B@5>oCM(B0-4) $B!Z2hA\|=j8+![(B MRI: $BA0N)A#:8MU>eIt$h$j:830A#It$K9-$,$k(BT1$B6/D4A\|$GEy?.9f!"(BT2$B6/D4A\|$GIT6Q0l$JDc?.9f$r<($97B(B4cm$BBg$N $B!ZIBM}=j8+![(B $B!!(BTUR$BI8K\(B: $B3KG;@w$7!"(BN/C$BHf$N9b$$KB?n7A$J$$$7Mq1_7A:YK&$NL)$JA}@8$rG'$a!"3KJ,NvA\|$b;68+$5$l$k!#B?7A@-$,6/$$ItJ,$G$O5p:YK&$b:.:_$7!"JQ@-!"2u;`A\|$d0lIt>eHiMM$NG[Ns$bG'$a$i$l$?!#(B $B!!E&=PI8K\(B: N/C$BHf$N9b$$KB?n7A:YK&$NB+>uG[Ns$rG'$a!":YK&L)EY$N9b$$ItJ,$H4V $BLH1V@w?'$G$O(BSMA(-), S100(-), CytokeratinAE1/3(-), CD34(+), c-kit(-), progesteron receptor(+), bcl-2(+), CD99(+) $B!ZLdBjE@![IBM}AH?%3XE*?GCG!JG[IUI8K\$OE&=PI8K\$N0lIt$G$9!K(B
$B	$B%^%/%m(B$B!"(BTUR1$B!"(BTUR2$B!"(B$BE&=P#1(B$B!"(B$BE&=P#2(B$B!"(B$BE&=P#3(B$B!"(B$BE&=P#4(B

592$B!'(BTUR-P$B8eF1$8It0L$K:FH/$7$?A0N)A#
$B<"2l0e2JBg3XImB0IB1!IBM}It(B1)$B!"8!::It(B2)$B!"AI@82qAm9gIB1!HgG"4o2J(B3)

$B6eEhN<<#(B1)$B!"3QC+0!5*(B2)$B!"@PED8wL@(B2)$B!"c7F#1Q@8(B2)$B!"2,It1Q=S(B1,2)$B!"6eEhKcM%H~(B3)

$BEjI<7k2L(B
BPH with atypical stromal cells...2
Sarcomatoid proliferation of prostatic stroma...1
Poorly differentiated adenocarcinoma...1
Stromal sarcoma...1
Malignant fibrous histiocytoma...1
Phylloides tumor of prostate...3
($B$&$A(Bmalignant 2)
Prostatic stromal proliferation of uncertain malignant potential...3

$B8!F$7k2L(B
Prostatic stromal proliferation of uncertain malignant potential

$B>INc(B 60$B:PBeA0H>!"CK@-!#(B

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$B!Z8=>I![;DG"(B270ml$B!"D>D2?G$K$FA0N)A#(Bgrade 3$B!"I=LLJ?3j!"CF@-9E!"7lCf(BPSA3.1ng/ml$B!#(B

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$B 1$B!"(B2$B!"(B3

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$BEjI<7k2L(B BPH with atypical stromal cells...2 Sarcomatoid proliferation of prostatic stroma...1 Poorly differentiated adenocarcinoma...1 Stromal sarcoma...1 Malignant fibrous histiocytoma...1 Phylloides tumor of prostate...3 ($B$&$A(Bmalignant 2) Prostatic stromal proliferation of uncertain malignant potential...3 $B8!F$7k2L(B Prostatic stromal proliferation of uncertain malignant potential
$B>INc(B	60$B:PBeA0H>!"CK@-!#(B
$B7P2a(B	$B!Zc32$H7lG"!#(B $B!Z4{1}Nr!"2HB2Nr![FC5-$9$Y$-=j8+$J$7!#(B $B!Z8=IBNr![GSG">c32$,=P8=$7!"6a0e$K$FEjLt$rI>u0-2=!##2%v7n8e$KFy4cE7lG"$,=P8=$7!"?U7k@P$r;XE&$5$lAPJ}$N<#NE$rL\E$K $B!Z8=>I![;DG"(B270ml$B!"D>D2?G$K$FA0N)A#(Bgrade 3$B!"I=LLJ?3j!"CF@-9E!"7lCf(BPSA3.1ng/ml$B!#(B $B!ZG"O)B$1F![8eItG"F;$K(B4x3 cm$B$N1"1F7gB;!#(B $B!ZG"F;6@![A0N)A#CfMUHnBg!#(B $B!Z7P2a![A0N)A#HnBg>I$N?GCG$K$F>x;6$K$h$k(BTUR-P$B;\9T!J@Z=\|I8K\(B11g$B!K!##4%v7n8e$KG"O)B$1F$r;\9T$7$?$H$3$m!"8eItG"F;$K(B1.6x1.3cm$B1"1F7gB;$,$"$j!"(BMRI$B$N(BT2$B6/D42hA\|$K$FA0N)A#FbA#$K$d$d9b?.9f$N(B1cm$B6/$Ne(B2.3x1.3cm)$B!"=i2s$N $B!ZLdBjE@![IBM}?GCG!"NI0-@-!"<#NEJ}?K(B $B!ZAwIUI8K\![#22sL\$N(BTUR-P$BI8K\(B
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$BEjI<7k2L(B
Chordoid glioma of the third ventricle...3
Rosai-Dorfman disease...1

$B8!F$7k2L(B
Chordoid glioma of the third ventricle

$B>INc(B 50$BBe!"=w@-(B

$B7P2a(B $B!Z8=IBNr![(B3$B%v7nA0$+$i;kNODc2<$r<+3P!"Ev1!$rB&;kNODc2<$HCf?40EE@$,8+$i$l!"(BMRI$B$K$F!"Bh;0G>< $B!Z8=!!>I![Cf?40EE@$H;kNODc2<0J30$K$O?@7P3XE*$K$b0[>o$OG'$a$:!#(B
$B!Z8!::=j8+![(B $B7l1U8!::$G$OCxL@$J0[>o$OG'$a$:!#Ii2Y;n83$G$O(BPRL, ACTH, TSH, LH$B$O@5>oH?1~!"(BGH$B$ODcH?1~!#(BCEA, AFP, hCG$B$b@5>oHO0O!#(B

$B x4.jpg$B!"(Bx10-1.jpg$B!"(Bx10-2.jpg$B!"(Bx20.jpg

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$BEjI<7k2L(B Chordoid glioma of the third ventricle...3 Rosai-Dorfman disease...1 $B8!F$7k2L(B Chordoid glioma of the third ventricle
$B>INc(B	50$BBe!"=w@-(B
$B7P2a(B	$B!Z8=IBNr![(B3$B%v7nA0$+$i;kNODc2<$r<+3P!"Ev1!$rB&;kNODc2<$HCf?40EE@$,8+$i$l!"(BMRI$B$K$F!"Bh;0G>< $B!Z8=!!>I![Cf?40EE@$H;kNODc2<0J30$K$O?@7P3XE*$K$b0[>o$OG'$a$:!#(B $B!Z8!::=j8+![(B $B7l1U8!::$G$OCxL@$J0[>o$OG'$a$:!#Ii2Y;n83$G$O(BPRL, ACTH, TSH, LH$B$O@5>oH?1~!"(BGH$B$ODcH?1~!#(BCEA, AFP, hCG$B$b@5>oHO0O!#(B
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$BEjI<7k2L(B
Ganglioglioma...2
Pituitary adenoma...1
Gangliocytoma...2
Gangliocytoma associated with pituitary adenoma...5
Ganglioneuroblastoma...1

$B8!F$7k2L(B
Gangliocytoma associated with pituitary adenoma

$B>INc(B 80$B:PBeA0H>!"CK@-!#(B

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$B 1$B!"(B2$B!"(B3

594$B!'2 $BBg:eBg3XIBM}IBBV(B1)$B!"G>?@7P302J(B2) $BHSDMFA=E(B1)$B!"@1ED5AI'(B1)$B!"@FF#MN0l(B2)$B!"4]Ln85I'(B2)$B!"5HJv=S
$BEjI<7k2L(B Ganglioglioma...2 Pituitary adenoma...1 Gangliocytoma...2 Gangliocytoma associated with pituitary adenoma...5 Ganglioneuroblastoma...1 $B8!F$7k2L(B Gangliocytoma associated with pituitary adenoma
$B>INc(B	80$B:PBeA0H>!"CK@-!#(B
$B7P2a(B	$B!Zc32!#(B $B!Z4{1}Nr!"2HB2Nr![FC5-$9$Y$-$3$H$J$7(B $B!ZNW>27P2a![(B3$BG/A0$+$i;kNODc2<$r<+3P$7!"6a0e$K$FGrFb>c$H$7$F<#NE!&7P2a4Q;!$5$l$F$$$?!#;kNO2sI\|$,CY$$$3$H$h$jEv1!>R2pLU$rG'$a$?!#F,It(BCT$B$K$F%H%k%30HIt$KD>7B(B4cm$BBg$NeIt!"D37A9\|F6$K$$h$S!"FbptF0L.$r4,$-9~$s$G$$$?!#(BMRI$B$K$F(BT1$B$d$d(Blow intensity$B!"(BT2$B$d$d(Bhigh intensity$B$r<($7$F$$$?!#N>LU$N2~A1$rG'$a$?!#FbJ,Hg5!G=$NJQ2=$H$7$F!"=QA0A}2C$r<($7$?7lCf@.D9%[%k%b%s!J(B7ng/ml$B!'4p=`CM(B6ng/ml$B!K!"5Z$S%W%m%i%/%A%s!J(B19.9ng/ml$B!'4p=`CM(B15ng/ml$B!K$,$=$l$>$l=Q8e$KDc2 $B!ZIBM}AH?%=j8+![.7?$+$iCf7?$GN`1_7A$N3K$+$i$J$k>.7?:YK&$,L)$K=<$O:YK&@.J,$KK3$7$$C89%;@@-$N4p.BN$rM-$9$kBg7?$N3K!"$$h$SK-$+$JK&BN$NBg7?:YK&$rB??t;68+$7$?!#$3$NBg7?:YK&$NK&BN$O$d$d9%1v4p@-$G!"JU1o$K9%1v4p@-pyN3$rM-$7!"#23K$rH<$&$b$N$bG'$a$?!#(B
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$BEjI<7k2L(B
Inflammatory pseudotumor...2
inflammatory myofibroblastic tumor...2
Solitary fibrous tumor...1
Chronic pancreatitis with pseudocyst...3
Pancreatitis...2
Amoebic abscess...1
Acinar cell carcinoma...1

$B8!F$7k2L(B
Amoebic abscess

$B>INc(B 60$B:PBeA0H>!"CK@-!#(B

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$B!ZF~1!;~8=>I![?HD9(B162 cm$B!"BN=E(B59 kg$B!"7l05(B112/62 mmHg$B!"L.Go(B78/$BJ,!"BN29(B37.3 $B!n!%:8>eJ"It$KI=LL$OJ?3j$G2DF0@-$N$J$$9E$$
$B!ZF~1!;~7l1U8!::=j8+![(B WBC$B!'(B7100/mm3$B!J9%Cf5e!((B75.0%$B!K!"(BHb$B!'(B9.5 g/dl$B!"(BPlt$B!'(B34.0$B!_(B104/mm3$B!%(BCRP$B!'(B10.2 mg/dl$B!%oHO0OFb$G$"$C$?!#(B

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$BEjI<7k2L(B Inflammatory pseudotumor...2 inflammatory myofibroblastic tumor...2 Solitary fibrous tumor...1 Chronic pancreatitis with pseudocyst...3 Pancreatitis...2 Amoebic abscess...1 Acinar cell carcinoma...1 $B8!F$7k2L(B Amoebic abscess
$B>INc(B	60$B:PBeA0H>!"CK@-!#(B
$B7P2a(B	$B!Z $B!Z4{1}Nr!"2HB2Nr![FC5-$9$Y$-=j8+$J$7!#(B $B!Z8=IBNr![0l%v7nA0$h$jJ"ItKDK~46$"$j!"#2=54VDxA0$KBg:eA%0wJ]81IB1!Fb2J$rR2p$5$l!" $B!ZF~1!;~8=>I![?HD9(B162 cm$B!"BN=E(B59 kg$B!"7l05(B112/62 mmHg$B!"L.Go(B78/$BJ,!"BN29(B37.3 $B!n!%:8>eJ"It$KI=LL$OJ?3j$G2DF0@-$N$J$$9E$$ $B!ZF~1!;~7l1U8!::=j8+![(B WBC$B!'(B7100/mm3$B!J9%Cf5e!((B75.0%$B!K!"(BHb$B!'(B9.5 g/dl$B!"(BPlt$B!'(B34.0$B!_(B104/mm3$B!%(BCRP$B!'(B10.2 mg/dl$B!%oHO0OFb$G$"$C$?!#(B $B!ZJ"It%(%3!<8!::=j8+![g9BNIt$K@\$7$F7B(B6.5 cm$BBg!"Ey%(%3!<@-$N $B!ZJ"It(BCT$B8!::=j8+![g9BNItA0J}!"4N:8MU8eJ}$K7B(B5 cm$BBg$NIT@0$J $B!ZJ"It(BMRI$B8!::=j8+![g9BNIt$h$jA0J}$KFM=P$9$k$h$&$J(B5 cm$BBg$N $B!ZJ"It7l4IB$1F8!::=j8+![ $B!ZLdBjE@![IBM}?GCG!JG[IUI8K\$OJ"9PFb
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$BEjI<7k2L(B
Leiomyoma...3
(atypical 2; epithelioid 1)
Leiomyosarcoma...4
Rhabdomyosarcoma...3
Intravascular lymphoma...1
Leiomyoma + malignant lymphoma...1

$B8!F$7k2L(B
Intravascular lymphoma

$B>INc(B 40$B:PBeA0H>!"=w@-!"L5?&(B

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$B MRI-1.jpg$B!"(BMRI-2.jpg$B!"(Bmacro1.jpg$B!"(Bmacro2.jpg$B!"(B$B$B!"(B $B6/3H(BHE.jpg

596$B!'6Z $B5~ETI\N)0e2JBg3X!!7WNL?GCGIBM}3XItLg(B $B1::j98;J!"0B@n3P!">.@>1Q0l!"??:jIp!"IMED?7<7!"Lx_7>
$BEjI<7k2L(B Leiomyoma...3 (atypical 2; epithelioid 1) Leiomyosarcoma...4 Rhabdomyosarcoma...3 Intravascular lymphoma...1 Leiomyoma + malignant lymphoma...1 $B8!F$7k2L(B Intravascular lymphoma
$B>INc(B	40$B:PBeA0H>!"=w@-!"L5?&(B
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