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Unknown Cases

This category contains 78 posts

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

Unknown case #32 – Pelvis Radiograph

History: 70 year old male with hip pain.  What is your diagnosis in this 70 year old male with hip pain? Comment and share below.

Solution to Unknown Case #31 – Osteopetrosis or Marble Bone Disease

History: male with headache. This is a case of osteopetrosis, also referred to as marble bone disease. In osteopetrosis, bones become abnormallly hardened, as opposed to osteoporosis where bone mineral density is abnormally decreased and osteomalacia where bones are abnormally soft. Osteopetrosis is thought to be caused by impaired osteoclast activity, resulting in impaired bone … Continue reading

Unknown case #31 – Skull radiograph

History: male with headache. What is your differential diagnosis? Comment and share below.

Solution to Unknown Case #30 – Perilunate Dislocation

History: 30 year old man with wrist swelling and pain. This is a case of a perilunate dislocation. A perilunate dislocation is a carpal instability pattern that usually results from hyperdorsiflexion of the wrist. In the perilunate dislocation pattern the capitate dislocates dorsally and moves proximally and rotates the lunate in a volar direction while … Continue reading

Unknown Case #30 – Wrist radiograph

History: 30 year old man with wrist swelling and pain. What is your diagnosis for this 30 year old man with left wrist pain and swelling? Comment and share below.

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