Accessory Azygous Fissure
History: 50 year old male with cough. This is the typical appearance of the accessory azygous fissure, which demarcates a portion of the right upper lobe of the right lung supplied by branches of the apical segment bronchus. It is a normal variant which is seen in about 0.4% of the population.
Subarachnoid Hemorrhage
History: 60 year old male with severe headache. This is a case of subarachnoid hemorrhage. Typically sudden onset non-traumatic subarachnoid hemorrhage is the result of a ruptured cerebral aneurysm, however, in this case the distribution of subarachnoid hemorrhage is not typical for a ruptured aneurysm, and may be related to other causes such as supratherapeutic […]
Ascites on Ultrasound
History: 50 year old male with abdominal pain and swelling. This is the typical appearance of ascites on ultrasound. The right upper quadrant of the abdomen, particularly in Morrison’s Pouch, also known as the hepatorenal recess, is a great place to look for free fluid.
Coronary Artery Bypass Graft with Left Internal Mammary Artery
History: 67 year old male with cough. This is the typical location of vascular clips seen in a patient who has undergone coronary artery bypass graft surgery with the left internal mammary artery. A nice paper on this surgery from 1977 is located here.
The azygoesophageal stripe
History: 40 year old male with cough. Normal chest radiograph showing a nice example of the azygoesophageal stripe.
Bronchitis – The B6 Bronchus
History: 65 year old male with productive cough. This is a case of bronchitis. The bronchi seen on end near the hila are the B6 bronchi, which supply the superior segment of the lower lobes bilaterally. The B6 bronchi in the radiograph above are seen well because they are oriented perpindicular to the x-ray beam, […]
Schmorl Node
History: 50 year old male undergoing thoracic CT for chest pain has an incidental finding in his lumbar spine. This is the typical appearance of a Schmorl Node. Frequently they may have a sclerotic border. A Schmorl node is an intravertebral disc herniation due to vertical disc extension through a weakened vertebral body endplate. The […]
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, […]
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, […]
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 […]