pseudotumoröse Weichteilläsionen von Hand und Handgelenk
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Carpal boss. a Plain radiograph (lateral view) showing a bony prominence at the dorsal aspect of the carpometacarpal joint (arrow). b Sagittal fat-suppressed (FS) TSE T2-weighted image (WI). Note bone marrow oedema and subchondral cyst formation at the carpo-metacarpal joint (arrows)
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Extensor carpi ulnaris tenosynovitis. Axial FS T2-WI shows fragmentation into multiple tendon fragments of the extensor carpi ulnaris tendon (arrowheads). Note increased fluid and debris within the tendon sheath
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Bizarre parosteal osteochondromatous proliferation (Nora’s lesion). a Plain radiograph of the finger showing a turret exostosis at the dorsal aspect of the proximal phalanx of the second finger (arrowhead). b Longitudinal ultrasound shows the exostosis causing focal contour deformity of the cortical bone (arrowheads) with adjacent hypoechoic cartilage cap (callipers)
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Examples of pseudomasses due to metabolic diseases. a Clinical picture of tophaceous gout. Peri-articular soft-tissue swelling best seen at the proximal interphalangeal joint of the third finger. b Corresponding plain radiograph showing soft-tissue swelling and adjacent periosteal new bone formation (arrow). c Ultrasound of another patient with tophaceous gout at the metacarpophalangeal joint of the thumb, showing a hypoechoic mass with intralesional reflections with retro-acoustic shadowing due to monosodium urate crystal deposition (arrows). d Pseudogout (hydroxyapatite deposition disease) in another patient. Plain radiograph showing linear and amorphous calcifications at the joint capsule of the distal interphalangeal joint of the index (arrows)
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Hypothenar hammer syndrome. a Sagittal SE T1-WI shows a hypointense lesion superficial to the flexor tendons (arrowhead) and immediately distal to the hamulus of the hamate (asterisk). b Axial FS SE T1-WI after intravenous administration of gadolinium contrast medium shows focal aneurysmal dilatation of the ulnar artery with central thrombosis (arrow). Note only faint peripheral enhancement. c Doppler ultrasound shows intraluminal thrombosis of the aneurysm of the ulnar artery. d MR angiography shows multiple stenoses at the distal ulnar artery with aneurysmal dilatation with internal clot formation (arrow)
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Histopathologically proven rheumatoid nodule in a patient with known rheumatoid arthritis. a Coronal SE T1-WI. Hypointense subcutaneous nodule at the palmar aspect of the distal phalanx of the right digit 3 (arrowheads). b Sagittal FS TSE T2-WI. High signal intensity of the lesion (black arrows). There is moderate pressure erosion of the palmar aspect of the distal phalanx. c Sagittal FS SE T1-WI after intravenous injection of gadolinium contrast medium. There is peripheral enhancement of the lesion (black arrowheads). Palmar localisation of a rheumatoid nodule is less frequent than localisation at the dorsal aspect of the hand
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Inflammatory tenosynovitis in a patient with known rheumatoid arthritis. a Transverse ultrasound of the extensor tendons of the wrist showing fluid surrounding the extensor tendons 4. b Transverse power Doppler examination shows increased vascularity within the tendon sheath and tendons
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Subcutaneous epidermoid cyst at the phalanges (arrowheads). Longitudinal ultrasound showing a well-defined subcutaneous lesion with variable echogenicity (anechoic components and some internal hyperechoic debris)
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Subcutaneous epidermoid cyst with involvement of the adjacent bone of the terminal phalanx of the right fifth finger. a Plain radiograph showing a well-defined osteolytic defect at the radial side of the distal phalanx. Note cortical destruction of the radial cortex. b Coronal SE T1-WI. The lesion is of intermediate signal intensity (arrows) with some internal areas of relatively high signal. c Coronal TSE T2-WI. High signal intensity of the lesion (arrows). d Coronal FS SE T1-WI after intravenous injection of gadolinium contrast medium. There is only subtle peripheral enhancement (arrows) of the lesion
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. De Quervain tenosynovitis. a Plain radiograph showing a non-specific soft tissue swelling at the radial styloid process (arrow). b Transverse ultrasound showing fluid surrounding the extensor pollicis brevis and abductor pollicis longus. c Longitudinal power Doppler examination shows increased vascularity surrounding the tendons
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Small dorsal ganglion cyst. a Axial FS T2-WI. Note a well-delineated hyperintense structure at the dorsal aspect of the wrist (arrow). b The coronal FS TSE T2-WI shows a fluid-filled tear at the scapholunate ligament (arrow)
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Foreign body (glass). Longitudinal ultrasound shows multiple hyperechoic reflections with accompanying reverberation artefact (arrows) at the dorsal aspect of the extensor tendons of the fourth digit
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Foreign body (wood) crossing the metacarpal heads. a Ultrasound shows a central hyperechoic wood fragment surrounded by a hypoechoic inflammatory reaction. b On power Doppler examination, there is increased vascularity at the periphery of the lesion. c Coronal FS T2-WI, showing a hypointense wooden splinter (arrows), with surrounding high signal band, due to inflammatory reaction. d Axial FS T1-WI after intravenous administration of gadolinium contrast medium showing a rim-enhancing abscess (white arrows) adjacent to the wooden splinter (black arrowhead)
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Myositis ossificans of the thenar in a 7-year-old boy presenting with pain and swelling at the thumb (active phase). a Plain radiograph. Note calcifications (arrow) in the thenar. b Axial SE T2-WI shows an ill-defined intramuscular mass that is hyperintense with central areas of low signal. Additionally, there is an intralesional area of heterogeneous low signal, corresponding to the calcifications on plain films (arrow)
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Small cyst (maximum longitudinal size between calliper measurements) at the dorsal aspect of the distal interphalangeal (DIP) joint in a patient with osteoarthritis. Note a small connecting stalk to the adjacent DIP joint (arrow). Longitudinal ultrasound
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Cyst of the tendon sheath. Longitudinal ultrasound showing a well-delineated anechoic structure (arrow) on the course of the flexor tendon of the right fourth finger (asterisks)
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Volar ganglion cyst. Longitudinal ultrasound showing a well-defined anechoic structure at the palmar aspect of the carpus. Note a small stalk-like connection to the adjacent radiocarpal joint (arrow)
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Volar ganglion cyst. a Coronal FS T2-WI. Note a polylobular hyperintense cystic structure with a small stalk-like connection to the adjacent scaphotrapezial joint (arrow). b Axial FS T2-WI. The cyst is well delineated and is of high signal intensity (arrowheads)
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Pseudotumoural
soft tissue lesions of the hand and wrist: a pictorial review. Palmar fibromatosis. a Longitudinal Doppler ultrasound. Hypoechoic nodule adjacent to the flexor tendon of the palm of the hand (third ray). b Axial SE T1-WI in another patient shows a hypointense lesion at the palmar aspect of the thumb (arrow). c Axial FS SE T1-WI after intravenous administration of gadolinium contrast medium shows diffuse enhancement (arrow)
pseudotumoröse Weichteilläsionen von Hand und Handgelenk
Siehe auch:
- Carpal boss
- Synovialzyste
- Ganglion (Überbein)
- Epidermoidzyste Finger
- Tendovaginitis stenosans de Quervain
- Hypothenar-Hammer-Syndrom
- Morbus Dupuytren
- Tendovaginitis Musculus extensor carpi ulnaris
- Fremdkörper in der Hand
- Weichteilverkalkungen der Hand
- Ganglionzysten der Hand und des Handgelenks
- Tendovaginitis Handgelenk
- Sehnenscheidenzyste
- Sehnenzysten
- bizarre parosteale osteochondromatöse Proliferation der Hand und der Finger
- Myositis ossificans der Handmuskeln
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Tendovaginitis
Musculus extensor carpi ulnaris
bizarre
parosteale osteochondromatöse Proliferation der Hand und der Finger