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Neuropathic Osteoarthropathy

History: 40 year old patient with spinal cord injury.  This is a case of neuropathic osteoarthropathy, also known as a Charcot joint. The imaging findings are typically described as the 5 “Ds,” which include normal bone Density, joint Distension, bony Debris, cartilage Destruction, and joint Disorganization (or dislocation/deformity). Usually when seen in the shoulder it is indicative of an entity called syringomyelia, … Continue reading

Ectopic Pregnancy – The Tubal Ring Sign, Ring of Fire, and Pseudogestational Sac

History 28 year old female presenting with right lower quadrant pain. Positive urine pregnancy test. This is a case of a tubal ectopic pregnancy. The differential diagnosis in this case includes corpus luteum of pregnancy, incidental adnexal mass, and intrauterine pregnancy. A corpus luteum of pregnancy will typically show the classic “ring of fire” pattern, … Continue reading

Metastatic Malignant Mesothelioma

History: 60 year old male with left sided chest pain. This is a case of pathology proven metastatic malignant mesothelioma. These are tumors of the pleura, and are most likely secondary to long-term asbestos exposure, in which there is a dose-response relationship and typically a latent period of 30-45 years. Asbestos plaques are not a … Continue reading

Zenker Diverticulum

History: 50 year old male presents with difficulty swallowing, halitosis, and hoarseness. The differential diagnosis of a barium filled sac in the cervical esophagus essentially includes two types of diverticula. The first, and the diagnosis in this case, is a Zenker diverticulum. A Zenker diverticulum is a mucosal herniation through weak areas in the cricopharyngeal … Continue reading

Calcified Splenic Cyst

History: 50 year old male with chest pain and shortness of breath has an incidental finding.  The differential diagnosis for a calcified mass projecting over the left upper quadrant of the abdomen includes prior granulomatous disease such as histoplasmosis or tuberculosis, arterial calcifications such as a splenic artery aneurysm, splenic infarction, and splenic cyst. Less … Continue reading

Superficial Venous Thrombosis to Deep Venous Thrombosis

History: 55 year old female seen five days earlier with a diagnosis of superficial thrombophlebitis returns with continued and worsening leg swelling.   This is a case of extension of a superficial venous thrombus into the deep venous system of the leg from the short saphenous vein to the popliteal vein. In patients with superficial … Continue reading


History: 60 year old male with fever, cough, and shortness of breath.  This is complete collapse of the lateral basal segment of the left lower lobe, which can also be describe as partial atelectasis of the left lower lobe. Lobar collapse occurs when an entire lobe of the lung is not aerated. Obscuration of the … Continue reading

Kerley B Lines

History: 60 year old male with lower extremity edema and shortness of breath.  This is an excellent example of Kerley B lines. These lines are created by interlobular septal thickening, typically created by fluid collecting within the pulmonary interstitium. Classically Kerley B lines are seen with cardiogenic pulmonary edema, where left ventricular failure causes increased … Continue reading

Superficial Thrombophlebitis

History: 60 year old female with lower extremity pain, swelling, and redness. This is a case of superficial thrombophlebitis, which is an inflammatory-thrombotic disorder of the superficial venous system. Typically it presents with pain, swelling, and warmth in the lower extemities with a “palpable cord,” which represents a thrombosed vein, as in the image above. … Continue reading

Transposition of the Inferior Vena Cava

History: 40 year old with abdominal pain and diarrhea.  Congenital anomalies of the inferior vena cava in about 0.2-0.5% of the population. Left sided IVC, which is this patient’s diagnosis,  is seen in up to 0.5% of the population. Other anomalies besides transposition of the inferior vena cava include azygous continuation of the inferior vena cava, … Continue reading