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Unknown Case #37 – Ankle Pain

History: Man with ankle pain.  What is the finding? Comment and share below! Find the answer to this case here. Advertisements

Solution to Unknown Case #36 – Osteoid Osteoma

History: adolescent with leg pain at night.  This is a classic case of an osteoid osteoma. An osteoid osteoma is a benign osteoid producing bone tumor. They are radiolucent on radiographs and classically have tumor nidus surrounded by reactive sclerosis on radiographs and edema on MRI. Osteoid osteomas represent approximately 10-15% of benign bone tumors … Continue reading

Unknown Case #36 – Child with leg pain

History: Adolescent with leg pain at night.  What is your diagnosis for this adolescent with leg pain at night? Comment and share below!

Solution to Unknown Case #35 – Calcific Myonecrosis

History: 70 year old man with leg pain.  This is a case of calcific myonecrosis of the anterior tibialis muscle. Calcific myonecrosis is a rare late complication of compartment syndrome. This patient actually had a history of compartment syndrome 30 years earlier. The current understanding according to this article here is that compartment syndrome initially leads to … Continue reading

Unknown Case #35 – Leg pain

History: 70  year old male with leg pain. What is your diagnosis? Comment and share below! Find the answer to this case here.

Solution to Unknown Case #34 – Bosch Bock Bump (Healed Segond Fracture)

History: 50 year old man with knee pain.  This is an excellent example of a Bosch Bock bump, which is a healed Segond fracture. This finding is nearly 100% specific for prior injury to the anterior cruciate ligament. A Segond fracture is an avulsion fracture of the lateral tibial capsular ligament at the lateral tibial … Continue reading

Unknown Case #34 – Knee pain

History: 50 year old man with knee pain.  What is your diagnosis? Comment and share below!

Solution to Unknown Case #33 – Ductus Bump or Ductus Diverticulum

History: male involved in high speed motor vehicle accident with chest pain.  This is a good example of a ductus diverticulum, or ductus bump. A ductus diverticulum is a focal smooth outpouching of the aortic wall at the aortic isthmus where the obliterated ductus arteriosus (the ligamentum arteriosum) is attached to the aorta. The ductus … Continue reading

Unknown Case #33 – High speed motor vehicle accident

History: male involved in high speed motor vehicle accident with chest pain. What is your diagnosis? Comment and share below! Thanks to Justin Tan, M.D. for these images.

Solution to Unknown Case #32 – Prostate Metastases To Bone

History: 70 year old male with hip pain.  This is a case of metastatic prostate cancer to bone. Prostate cancer metastases are usually sclerotic (also called osteoblastic), leading to increased opacity on x-rays and CT scans. Prostate cancer metastases also have a preference for the axial skeleton over the appendicular skeleton. The gold standard for determining … Continue reading

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