31. The term bone infarction is used for osteonecrosis within
the diaphysis or metaphysis.
If the osteonecrosis is located in the epiphysis, the term
avascular osteonecrosis is used.
31
41. H畛Y 掛働鰻赫
V畛 tr鱈 h畛y x動董ng v ngu畛n g畛c u
畉u x動董ng: u ngu畛n g畛c s畛n, kh畛p
Hnh x動董ng: u nguy棚n ph叩t
Th但n x動董ng: di cn, nhi畛m khu畉n, c叩c u ngu畛n g畛c t畛
m叩u
S畛n: nhi畛m tr湛ng m畛i v動畛t qua s畛n, u (-)
V畛 x動董ng: t畛 trong 岳畛y ra hay t畛 ngoi x但m l畉n vo v畛
x動董ng
41
42. T畉O 掛働鰻赫
T畛 x動董ng (do b竪 x動董ng) hay mng x動董ng
P働MX lnh t鱈nh: dy 1 l畛p li棚n t畛c, 畉m 畛 畛ng nh畉t
v song song tr畛c x動董ng, ti畉n tri畛n ch畉m (u lnh, g達y
x動董ng,..)
P働MX 叩c t鱈nh: h狸nh v畉y hnh, tam gi叩c Codman, t畛a
gai (d畉ng bn ch畉i hay tia n畉ng m畉t tr畛i) ti畉n tri畛n
nhanh (VX, u 叩c,.)
42
52. PHN LO畉I U 掛働鰻赫
THEO M H畛C
U lnh U 叩c
S畛n OC, CB Chondrosarcoma
X動董ng Osteoma, OO, OB OS
M担 li棚n k畉t Bone cyts, NoF Fibrosarcoma
T畛y x動董ng Hi畉m Ewing tumor, MM
M畉ch m叩u Hemangioma Angiosarcoma
Kh担ng r探 ABC GCT
52
53. PHN BI畛T U LNH C
U LNH U C
動畛ng
b畛
R探, li棚n t畛c, vi畛n x董
h坦a
Kh担ng r探, m畉t li棚n t畛c,
vi畛n x董 h坦a(-)
V湛ng CT H畉p R畛ng, kh担ng r探
V畛 x動董ng BT, m畛ng H畛y, v畛 v畛 x動董ng
PUMX Lnh c
X但m l畉n
m担 m畛m
(-) (+)
Ti畉n tri畛n Ch畉m Nhanh
53
54. VI 畉C I畛M LM SNG
Ewing Sarcoma 畛 ng動畛i da tr畉ng chi畉m 95%
TCLS: osteoid osteoma au x動董ng ban 棚m v 叩p
畛ng NSAID
XQ Enchondroma v Chondrosarcoma t動董ng t畛
nh動ng Enchondroma th動畛ng kh担ng au
Tu畛i:
+ 1-10t: Ewing sarcoma (x動董ng 畛ng)
+ 10-20t: Ewing sarcoma (x動董ng d畉t)
+ 30-40t: GCT, fibrosarcoma, ParOS,
+>40t: Met, MM, chondrosarcoma,
54
87. CC HNH TH畛C DI L畛CH
1. Di l畛ch sang b棚n (trong/ngoi; tr動畛c/sau)
2. Di l畛ch ch畛ng
3. Di l畛ch g畉p g坦c
4. Di l畛ch xoay
5. Di l畛ch d畛c tr畛c xa nhau
Qui 動畛c: 畛nh h動畛ng di l畛ch d畛a vo di l畛ch c畛a
o畉n g達y xa 畛i v畛i o畉n g達y g畉n
87
159. Skull X-rays can be categorized in the following
groups:
1. Abnormal density
2.Abnormal contour of the skull
3.Abnormal intracranial volume
4.Intracranial calcification
5.Increased thickness of the skull
6.Single lucent defect
7.Multiple lucent defects
8.Sclerotic areas
159
160. 160
HNH D畉NG H畛P 皆畛
C担ng th畛c Retjius
I = chi畛u cao / chi畛u di * 100
B狸nh th動畛ng I=75-84
S畛 di: I<75
S畛 ng畉n: I>84
** Chi畛u cao t鱈nh t畛 b畛 l畛 ch畉m 畉n ch畛 cao nh畉t
x動董ng 畛nh
** Chi畛u di t鱈nh t畛 b畛 sau x動董ng tr叩n 畉n b畛 tr動畛c
x動董ng ch畉m