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Musckuloskeletal MCQs

Musckuloskeletal MCQs. Aneurysmal Bone Cyst (ABC) . Aneurysmal Bone Cyst (ABC) . Respect epiphyseal plate. soap-bubble. Thin internal trabeculations. Almost invesible cortex. Expansile lesion. No periosteal reaction except in case of fracture. Doughnut sign in scintigraphy.

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Musckuloskeletal MCQs

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  1. MusckuloskeletalMCQs

  2. Aneurysmal Bone Cyst (ABC)

  3. Aneurysmal Bone Cyst (ABC)

  4. Respect epiphyseal plate soap-bubble Thin internal trabeculations Almost invesible cortex Expansile lesion No periosteal reaction except in case of fracture

  5. Doughnut sign in scintigraphy

  6. Aneurysmal Bone cyst : • Occur secondary to fibrous dysplasia • Can present with scoliosis • May contain fluid-fluid level at MRI • Contain calcified matrix • Doughnut sign at scintigraphy is pathognomonic (√ ) (√ ) (√ ) (X ) (X )

  7. Multiple Myeloma

  8. Mulyiple osteolytic Punched-out lesion

  9. Mulyiple osteolytic Punched-out lesion Absence of perilesional sclerosis

  10. Complicated by pathological fracture Associated with osteopenia

  11. PET PET-CT coronal view

  12. Regarding Multiple Myeloma : • It is the commonest 1ry neoplasm of bone • Generalised osteopenia is a recognised appearance • Scintigraphy over-estimates disaese extent • Lesions becomes scleotic following chemotherapy • Vertebral pedicle destruction is an early event (√ ) (√ ) in 15 % (X ) under estimates (√ ) also following radiotherapy (X ) (Ref: Grainger and Allison pp1913-1915,Daenhartppp121-122, Chapman 2003pp575-576)

  13. Rheumatoid arthritis :

  14. Joint deformity Periarticular osteopenia Narrowing of the joint spaces Soft tissue swelling Joint instability due to ligament rupture Articular erosion

  15. High ridding of the humerus Lateral erosion of the clavicle Marginal erosion Narrowing of the glenohumoral joint

  16. Lateral deviation of toes , Hammer toes Erosion of the MTP

  17. ligamentous destruction can result in atlantoaxial impaction Erosion of Odontoid process Pannus proliferation directly compresses the spinal cord. Erosion of facet joints

  18. Erosion of the lateral 3rd of the clavicle is seen in the following: • Rheumatoid arthritis • Ankylosingspondylitis • Langerhans cell histiocytosis • Hypoparathyroidism • Multiple myeloma (√ ) (X ) (X ) (X ) Hyperparathyroidism (√ )

  19. Concerning Malignant Bone Lesions

  20. Concerning Malignant bone lesion: • Chordoma is most common in the thoracolumbar spine • Fibrosarcoma is the commonest tumour 2ry to paget’s disease • Adamantinomaoccursin the tibia in over 90% of cases • Angiosarcoma has a soap bubble appearance at radiography • Chondroblastoma are typically found in the diaphysis (X ) 90% in basisphenoid and sacrum

  21. Sacral Chordoma

  22. Basisphenoid Chordoma

  23. Concerning Malignant bone lesion: • Chordomaos most common in the thoracolumbar spine • Fibrosarcoma is the commonest tumour 2ry to paget’s disease • Adamantinoma occurs in the tibia in over 90% of cases • Angiosarcoma has a soap bubble appearance at radiography • Chondroblastoma are typically found in the diaphysis (X ) 90% in basisphenoid and sacrum (√ ) (√ )

  24. Adamantinoma

  25. Concerning Malignant bone lesion: • Chordomaos most common in the thoracolumbar spine • Fibrosarcoma is the commonest tumour 2ry to paget’s disease • Adamantinomaoccursin the tibia in over 90% of cases • Angiosarcoma has a soap bubble appearance at radiography • Chondroblastoma are typically found in the diaphysis (X ) 90% in basisphenoid and sacrum (√ ) (√ ) (√) (X ) they are epiphyseal lesions

  26. Chondroblastoma

  27. Thank you

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