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History: adult male with ankle pain. This is the appearance of osteochondral injuries on plain radiography and MRI. The term osteochondral lesion has been broadly applied to include abnormalities of the bone and cartilage that are not acute. In the ankle, osteochondral injuries are most common at the middle third of the lateral talar dome … Continue reading
Recently I came across an extremely useful blog resource written by self-published author and lead radiology technologist Jeremy Enfinger. His blog is Topics in Radiography and his book Becoming a Radiologic Technologist can be found here. Today we have the privilege of a guest post by Jeremy regarding a crucial topic – the relationship between radiologists … Continue reading
History: 35 year old male with foot pain. This is the appearance of pes planus, or flatfoot, which occurs in up to 20% of adults with no other abnormalities. There are many contributors to pes planus deformity, including hindfoot valgus shown by increased talocalcaneal angle to greater than 45 degrees, midfoot sag or lisfranc ligament … Continue reading
History: 50 year old male with uncontrolled diabetes. This is a common appearance in patients with uncontrolled diabetes and osteomyelitis of the foot. There are many muskuloskeletal complications of diabetes, most of which predominantly affect the feet. Most commonly is ulceration, cellulitis or abscess formation. Diabetic patient’s frequently develop peripheral neuropathy and therefore have difficulty … Continue reading
History: status post trauma with severe blood loss. This is a case of diffuse cerebral edema secondary to exsanguination. The pathophysiology of diffuse cerebral edema in the case of exsanguination involves global brain ischemia secondary to hypoperfusion from hypovolemic shock. Brain ischemia leads to anaerobic metabolism that produces less adenosine triphosphate (ATP) and more lactate. … Continue reading
History: Middle aged male with ankle pain. Malleolar fractures are classified mainly by two classification systems, the Weber system and the Lauge-Hansen system. There are three main types of Weber fractures (A,B, and C). The Lauge-Hansen system is much more complex and divides the fractures into their mechanisms, including supination/adduction, supination/external rotation, pronation/abduction, and pronation/external … Continue reading
History: 65 year old male with bilateral hip pain. This case illustrates the classic findings of hip osteoarthritis including joint space narrowing, subchondral cysts, and osteophytes or osseous productive changes. Osteoarthritis most commonly presents with morning stiffness and pain related to use, and is very common in patients older than 65 years of age. It … Continue reading
History: elderly female with back pain and deformity. This is a case of multiple thoracic spine pathologic compression fractures secondary to osteoporosis in an elderly female patient. Osteoporosis is a condition of decreased bone mineral density that places patients at risk for fracture. Causes of osteoporosis include prolonged steroid use, post-menopausal state, and normal aging, … Continue reading
This mnemonic is commonly used to recall the differential diagnosis for contrast enhancing mediastinal masses: CAPT CAPT C – Carcinoid tumor A – Aneurysm P – Paraganglioma T – Thyroid C – Castleman A – Anuerysm (I know, its mentioned twice because you definitely don’t want to miss this one) P – Parathyroid T – … Continue reading
History: middle aged male with knee pain. This is a case of lipohemarthrosis beautifully demonstrated on MRI. Lipohemarthrosis is simply the presence of fat and blood in a joint effusion (see a large knee joint effusion here), and it typically is caused by a fracture at the articular surface of a joint that extends into … Continue reading
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