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Juxta-articular chondroma Kaposi's Sarcoma Large cell lymphoma, Leimyosarcoma, Leiomyosarcoma, Letterer-Siwe disease, Leukemia, Low-grade intramedullary osteogenic sarcoma, Lumbosacral lipoma, Lymphangioma, Lymphangiomatosis, Lymphoma, Lymphoma pseudotumor (Actual: radiation osteitis), Lymphoma pseudotumor (Actual: stress fracture), Lymphoma with secondary osteogenic sarcoma Maffucci's Syndrome, Maligant fibrous histiocytoma pseudotumor (Actual: Hematoma), Malignant fibrous histiocytoma (MFH).
Osteoid osteoma pseudotumor (Pulled muscle) - Proximal femur - CT scan
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Osteoid osteoma pseudotumor (Pulled muscle) - Proximal femur - CT scan
  • Case ID: 49
  • Diagnosis: Osteoid osteoma pseudotumor (Pulled muscle)
  • Category: Pseudotumors
  • Category Type: Osteoid-forming
  • Category Sub Type: Benign
  • Location: Proximal femur
  • Sub Location: Intracortical
  • Age: 14
  • Sex: M
  • Treatment: Observation
  • Image ID: 1114
  • Image Type: CT scan
  • Images relating to this case: 1113 , 1114, 1115 .

This transverse cut of a CT scan through the proximal femur demonstrates dense reactive bone formation on the medial cortex of the femur as a response to trauma. The lack of a nidus helow powers rule out the diagnosis of an osteoid osteoma.


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