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COVID-19 Imaging findings

COVID-19 is a viral disease also known as SARS-CoV-2 or severe acute respiratory syndrome coronavirus 2.The diagnosis is made by a positive PCR test, which is highly specific.CT has a higher sensitivity but lower specificity and can play a role in the diagnosis and treatment of the disease.In this article we will describe the role of...

Bi-RADS for Mammography and Ultrasound 2013

This article provides a summary of the BI-RADS® Atlas, 5th Edition (2013) for mammography and breast ultrasound. It is an updated version of the 2005 article. Since 2000, the use of BI-RADS has been mandatory in the Netherlands, as described in the updated Breast Cancer Guideline (2012) (6). The implementation of BI-RADS is an integral...

Non-traumatic Intracranial Hemorrhage

Any type of bleeding inside the skull or brain is a medical emergency.The most common causes of hemorrhage are trauma, haemorrhagic stroke and subarachnoid haemorrhage due to a ruptured aneurysm.Complications are increased intracerebral pressure as a result of the hemorrhage itself, surrounding edema or hydrocephalus due to obstruction of CSF.In this...

Mediastinum

Differential of Breast Calcifications

Ductal carcinoma-in-situ (DCIS) represents 25-30% of all reported breast cancers. Approximately 95% of all DCIS is diagnosed because of mammographically detected microcalcifications. In this review we will focus on:Description of breast calcifications Differential diagnosis BIRADS classification

Incidentalomas in the liver

This review is based on a presentation given by Maarten van Leeuwen for the Dutch Radiology Society and was adapted for the Radiology Assistant by Joost Nederend and Robin Smithuis. With the increasing use of multidetector CT small hepatic lesions are frequently depicted. In many cases the pathological nature of these incidentally found liver lesions or...

Appendicitis - Pitfalls in US and CT diagnosis

In this chapter we will deal with the optimal diagnostic strategy in patients with suspected appendicitis, and the pitfalls leading to a false-positive or false-negative diagnosis. Special attention will be given to: Abnormal location of the appendixDifferential diagnosis of appendicitisComplications. For critical comments and additional...