Radiopaedia newsletter - October

Having trouble viewing this email? [View it online instead](. [Radiopedia.org]( October 2017 [Vertebral aplasia - Von Schlapp syndrome] New Site Feature - Verified Institutions We are excited to announce the addition of our latest feature to our website: Verified Institutions. Belonging to a verified institution allows all members to collate cases together into one communal public or private case library, as well as access a number of additional perks. Have a look at the [Royal Melbourne Hospital's institution page](. How can your institution become verified? Verification is a simple process, involving a couple of steps, each of which will only take a few minutes of your time. [Find out more about verified institutions]( Feature Article [new app] Deep Sulcus Sign The [deep sulcus sign]( on a supine chest radiograph is an indication of a [pneumothorax](. In a supine film (common in the ICU), it may be the only indication of a pneumothorax because air collects anteriorly and basally, within the nondependent portions of the pleural space, as opposed to the apex when the patient is upright. The costophrenic angle is abnormally deepened when the pleural air collects laterally, producing the deep sulcus sign. [FIND OUT MORE]( Feature Cases [new app] These are 10 of the most talked about 'featured cases' from recent times: [Tuber cinereum hamartoma]( - [Bone infarction]( - [Pericardial agenesis]( - [Sarcoidosis (stage I)]( - [Silicosis with progressive massive fibrosis]( - [Chicken neck lodged in bronchus]( - [Hill-Sachs lesion with bony Bankart lesion]( - [Sigmoid volvulus]( - [Pituitary apoplexy]( - [Burkitt lymphoma]( - [Humeral avulsion of the glenohumeral ligament (HAGL)]( Spotlight on ..... Radiopaedia Editor and Presenter, Dr Vikas Shah [new app] In daily clinical practice, ischaemia of the small bowel is a difficult diagnosis to make, with many different causes and manifestations on imaging. I chose this case, [Mesenteric carcinoid with small bowel ischaemia]( as it illustrates one of the many causes and manifestations of small bowel ischaemia, along with some other features to look out for. There is a soft tissue deposit in the mesentery with small foci of calcification and it has a desmoplastic effect. This means that it draws in surrounding bowel loops towards it. It also encases and constricts the mesenteric arteries and veins, so that the bowel within the vascular territory undergoes mixed arterial and venous ischaemia. These are classic appearances of a carcinoid tumour. If this metastasizes to the liver, it may cause carcinoid syndrome due to excess hormone secretion. The liver lesions are typically hypervascular so an arterial phase study is required to optimally detect them. Learn more about this case, along with other small bowel ischaemia cases, at our Abdominal Emergency Radiology course which is being held in Leicester (UK) on Saturday 14th October, presented by Dr Vikas Shah and Dr Jeremy Jones. Unable to attend the event? You can [pre-register]( for our early-bird discount for 3 month / 12 month online video access instead. [BOOK TO ATTEND]( [Radiopedia.org] Radiopaedia Australia Pty Ltd PO BOX 274Kew, Vic 3101 Australia [Add us to your address book]( Not interested in receiving the newsletter? [Unsubscribe]( | [Manage My Preferences]( Copyright © Radiopaedia Australia Pty Ltd, All rights reserved