STEEPLECHASE - MUSCOLOSKELETAL II Flashcards

1
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Dotted circle = gomphosis (fibrous joint)

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2
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Sutures (fibrous joint)

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3
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Syndemosis (fibrous joint)

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4
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Synchondrosis (temporary) (cartilaginous joint)

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5
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Symphysis (cartilaginous joint)

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6
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Synovial (diarthrodial joint)

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7
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Normal synovial fluid

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8
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Synovial fluid - inflammatory joint effusion

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9
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Synovial fluid - purulent joint effusion

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10
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Synovial fluid - bloody joint effusion

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11
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Intervertebral discs

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12
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Intervertebral discs

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13
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Intervertebral disc

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14
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Marked chondrone formation secondary to osteochondrosis in the articular cartilage of a horse

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15
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Normal synovial membrane

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16
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Synovial villous hyperplasia

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17
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18
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19
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Synovial pannus

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20
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Synovial pannus

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21
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Synovial fossae - horse talus

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22
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Synovial fossae - goat tail

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23
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Degenerative joint disease

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24
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Lesion progression of DJD

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25
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Early DJD - loss of proteoglycans and exposure of collagen loops = roughening and fibrillation of cartilage

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26
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27
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Cow - carpometacarpal joint, sclerosis (localised area of radiodensity)

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28
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Cartilage and sclerosis of underlying bone

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29
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30
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Eburnation

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31
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Fetlock erosion

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32
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DJD

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33
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34
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Spontaneous osteoarthritis (OA)

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35
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36
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37
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38
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Ossification of the cartilage of hoof (sidebone) of Yenikapi Byzantine horses

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39
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A

Bog spavin

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40
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Bog spavin

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41
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Navicular syndrome

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42
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Bog spavin:

  1. Enlarged medial side of tarsus
  2. Fusion of medial surfaces of central and third tarsal bones

3-4 Early and late histological changes.

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43
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Navicular bone in excellent condition - homogenous articular arteries

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44
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45
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Dog - healthy knee

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46
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Arthritic knee, dog

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47
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Navicular arthritis

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48
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49
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Vertebrae intervertebral disc rupture spinal cord

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50
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Vertebrae intervertebral disc rupture spinal cord

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51
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52
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53
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Intervertebral disc disease

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54
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IVDD

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55
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Spondylosis

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56
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Osteochondrosis

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57
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58
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59
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Osteochondrosis dissecans - flap of cartilage formed by a dissecting band of necrosis and separation extending along the deep growth cartilage and communicating with the articular surface

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60
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A

Osteochondrosis

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61
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A

Osteochondrosis dissecans

62
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Osteochondrosis dissecans in dog - focus of articular cartilage encircled by fissures forming a partially attached flap

63
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Osteochondrosis dissecans - 6 m/o foal extensive under-running and displacement of articular cartilage on lateral trochlear ridge, many small cartilage nodules represent attempts at repair

64
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Osteochondrosis in horse - subchondral cystic lesion in the medial femoral condyle

65
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A

Cervical vertebral myelopathy (‘Wobbler syndrome’)

66
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67
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Cervical vertebral myelopathy (‘Wobbler syndrome’)

68
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Cervical vertebral myelopathy (‘Wobbler syndrome’)

69
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Hip dysplasia - lack of conformity between femoral head and acetabulum

70
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A

Mild hip dysplasia

71
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Severe hip dysplasia

72
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Early hip dysplasia

73
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Late hip dysplasia

74
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Late hip dysplasia

75
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Hip dysplasia

76
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Atlantoaxial subluxation

77
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Patellar luxation

78
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Horse - lateral luxation

79
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A

Infectious inflammatory joint disease

80
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Inflammatory joint disease - infectious

81
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A

Acute synovitis with neutrophils emerging from capillaries and migrating into joint cavity

82
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A

Acute serosanguinous arthritis in foal (infectious haematogenous inflammatory joint disease)

83
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A

Chronic fibrinous arthritis in goat (Infectious haematogenous inflammatory joint disease)

84
Q
A

Fibrinous arthritis

85
Q
A

Serofibrinous arthritis - tibiotarsal joint, foal - opened joint reveals inc amounts of cloudy, yellow, synovial fluid (asterisk) characteristic of serofibrinous arthritis of non-specific cause - synovial proliferation (arrow) indicates some degree of chronicity

86
Q
A

Acute fibrinous arthritis, bone, tibial tarsal joint (hock), calf - joint space is distended by layers of yellowish-brown fibrin that coat the synovial surface (arrow) of the joint capsule; articular cartilage is white and glistening

87
Q
A

Chronic fibrinous (active) synovitis, erysipelas, stifle joint, pig. Chronic arthritis caused by erispelothrix rhusiopathiae -> villous hypertrophy (arrows) of synovial membrane. Tips of some villi are haemorrhagic and necrotic

88
Q
A

Destruction of articular cartilage by inflammatory exudate - the destruction of articular cartilage by hydrolytic proteases of inflammatory cells and inflammatory serum proteins

89
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A

Severe purulent osteoarthritis/synovitis - carpal-metacarpal joint

90
Q
A

Suppurative/purulent arthritis

91
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A

Degenerate neutrophils - suppurative/purulent arthritis, septic arthritis (bacteria)

92
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Non-degenerate neutrophils - suppurative/purulent arthritis = mycoplasma, Borrelia, some other viruses

93
Q
A

Diskospondylitis

94
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A

Diskospondylitis

95
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A

Early diskospondylitis

96
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Late diskospondylitis

97
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Streptococcal arthritis in pig - synovium is ulcerated, infiltrated by neutrophils and covered with fibrin

98
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A

Erysipelothrix arthritis in a pig - marked synovial hyperplasia in stifle joint

99
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Mycoplasma mycoides arthritis in goat kid, synovium is inflamed and hyperplastic with a thick fibrinosupprative exudate attached to the surface

100
Q
A

Caprine arthritis-encephalitis - infiltration of the synovium and hypertrophy of synoviocytes on the surface

101
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A

Caprine arthritis-encephalitis virus (CAEV)

102
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A

Avian reovirus - lymphoplasmacytic and firbinous tenosynovitis

103
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A

Fungi

104
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105
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Fistulous withers - lesions easily 2^y contaminated/infected, need to be taken care of immediately

106
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A

Poll evil

107
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A

Chronic carpal bursitis in a sheep - thickened fibrous wall surrounding numerous fibrin concretions

108
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A

Elbow hygroma in a dog - wall composed of granulation tissue in which lining cells resemble synoviocytes

109
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A

Adventitious bursae

110
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111
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A

Erosive arthritis synovitis

112
Q
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Cranial-caudal radiographic view of stifle of dog w/ erosive immune arthritis. Arrow = early erosive lesion on femoral condyle

113
Q
A

Non-erosive immune-mediated polyarthritis - shar pei fever

114
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A
115
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Small breed dog with bilateral luxation of carpi and tarsi and walks plantigrade (on soles of feet) (Canine Rheumatoid arthritis)

116
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Reddened, hairless skin over metacarpus due to chronic licking that warm the joints and provides some relief from chronic pain (canine rheumatoid arthritis)

117
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A

Canine Rheumatoid Arthritis - chronic erosive polarthritis

118
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A

Canine Rheumatoid Arthritis - chronic erosive polarthritis

119
Q
A

Pannus - rheumatoid-like arthritis, proximal radius and ulna, dog

120
Q
A

Fibrovascular repair tissue (pannus) is seen arising from the synovium (left) and growing onto the surface of the articular cartilage (arrows), which is relatively undamaged at the stage of the disease

121
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Pannus originating from the synovium (left) is invading destroying the articular cartilage (arrows) and subchondral bone (s). Macrophages and other chronic (mononuclear) inflammatory cells

122
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A

Feline chronic progressive polyarthritis, “Periosteal proliferative form”

123
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124
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Idiopathic polyarthritis - medium/larger dogs; most common form of ANA-negative polyarthritis

125
Q
A

Systemic lupus erythematosus - cyclic deposition of circulating immune complexes in synovium provoke cyclic synovitis that cannot sustain a destructive pannus

126
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A
127
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Non-erosive (non-deforming) poly arthritis - carpal bones with intact articular margins

128
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Non-erosive (non-deforming) polyarthritis - minimal synovitis and marginal pannus has not eroded joint margins

129
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130
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131
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132
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A

Synovial myxoma

133
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Synovial chondromatosis

134
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Synovial cyst

135
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136
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137
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138
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139
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140
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141
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142
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143
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144
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Leiomyosarcoma of ileocaecal junction

145
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146
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147
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Osteosarcoma

148
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Osteosarcoma

149
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Osteosarcoma

150
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Osteosarcoma